Samsung LN37A550 37-Inch 1080p LCD HDTV Review

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(More customer reviews)I bought the Samsung LN37A550 from Amazon in mid-May. I comparison shopped for several months, and found that the Samsung is on equal footing as the Sony Bravia XBR-Series KDL-37XBR6 37-Inch 1080p LCD HDTV and Sharp Aquos LC37D64U 37-Inch 1080p LCD HDTV models in performance, but (at the time) was more affordable than either. Here's an in-depth run-down of the top-of-the line models from each of those three brands using MY comparison criteria. Hopefully it helps you.
Price
These are prices from Amazon.com (not their "marketplace partners" or whatever they're called). I'd recommend purchasing from Amazon itself, as they offer the free "white-glove" delivery, which means that the delivery company will bring the TV into your house, unpack it, and haul away the packing materials. My TV was delivered 3 days after I ordered it, and many others who reviewed on this site have had the same experience.
Also, keep in mind Amazon's financing offers if you open an Amazon.com credit account - see below for more details.
Samsung LN37A550: Retail is $1200. I've watched Amazon's price fluctuate between $1040 and $1200. Today the price is $1064, which is as good as I've seen. In addition, Samsung TVs often have financing deals - mine was 1-year, no payments and no-interest financing, and I've also seen 18-month specials.
Sharp LC37D64U: Retail is $1400, and the fact that it was selling for about $1350 a month ago strongly influenced my decision. Today the price is $1016, which may have changed my purchase based solely on the size (Sharp is slightly narrower - see below - and the Samsung is a REALLY tight squeeze in my space). I have not seen ANY financing deals on Sharp TVs through Amazon - pay it all up front.
Sony KDL-37XBR6: Retail is $1500. Today's price on Amazon is $1400 - a major consideration (about $350 price difference), but there's also a 36 (read it again, 36) month no interest offer on this TV right now. Minimum monthly payments are required.
Contrast Ratio, Response Time, and Frame Refresh Rate
Keep in mind that different manufacturers use different methods to measure these specifications, so they can not be simply compared using numbers. All I can say is that I viewed them in a couple of different retail locations, and there is little difference in picture brightness / blurring between these models. All are capable of 1080p picture.
Samsung: 15,000:1 dynamic contrast ratio and 5 ms response time. 60 hZ refresh rate.
Sharp: 10,000:1 dynamic contrast ratio and 6 ms response time. 60 hZ refresh rate.
Sony: 25,000:1 dynamic contrast ratio and unpublished response time. 120 hZ refresh rate. The refresh rate is where the Sony has an advantage over the others. I'm not going to get into it here, but here's a great article from CircuitCity.com explaining refresh rate in clear, simple terms (http://www.circuitcity.com/rpsm/cat/-12869/edOid/208448/rpem/ccd/lookLearn.do). All I'll say is that, in-store with a BluRay disc, the 120 hZ setting on a 46" screen looked AWESOME. Some have complained that it produces a "soap-opera" effect. Not being a big fan of soap-operas, I have no idea what they are referring to. Personally, I don't think it's enough of a reason to spend the extra $300+, because of screen size. With a bigger 50"+ screen, your eye will catch blurring across the screen, but on a screen of this size I have never noticed any blurring with my 60 hZ model.
High-Def Inputs
These all have the HD connections below, along with Digital Audio outputs, and other (S-video and composite video, and stereo audio) inputs.
Samsung: 3 version 1.3 (latest) HDMI Inputs (2 in rear, 1 on side), 1 USB input (for viewing JPGs and listening to MP3s), 1 PC input, and 2 component video inputs.
Sharp: 2 HDMI Inputs (Amazon and Sharp's website don't say they are version 1.3, which is supposedly faster and therefore better quality), 1 PC input, and 2 component video inputs. Also has side inputs.
Sony: 4 HDMI Inputs (3 in rear, 1 on side; again, Amazon and Sony don't say version 1.3, but I would think it's GOT to be..... don't know why they wouldn't publish this, though), 1 PC input, and 2 component video inputs.
Sound
Most reviews I have read complain about the Samsung's sound quality (most common in complaint is that the speakers sound "tinny"). I turned off the speakers before I ever hooked the TV up to an input (I've got a surround sound system), so I can't speak to this. I bought the TV for the picture, not the sound, but if that's important to you, read other reviews. I've read a couple of complaints about the Sharp model, but they didn't seem quite so angry as the complaints regarding Samsung, so I'm guessing it's acceptable sound.
Size
Size can be a consideration for many in purchasing a TV of this size. I was space constrained only in width. If you've got space constraints and 37" in width, you might also consider the Toshiba REGZA 40RF350U Super Narrow 40-Inch 1080p LCD HDTV Super Narrow Bezel, which measures just 36.77" wide. I have not seen it in action, so I can't speak to it's performance, but other Toshiba LCDs that I HAVE seen did not compare to these 3 TVs in picture quality.
Samsung: 36.1 inches wide and 40 pounds with stand (32 pounds without)
Sharp: 35 and 23/64" wide (yes, some people really squeeze that tight) and 45 pounds with stand (39 without)
Sony: 36.3 inches wide and 47 pounds with stand (40 without)
Warranty
All of these TVs have 1 year parts / 1 year labor manufacturer warranties.
Additional features:
Each brand offers their own graphics processing engine that claims to be the greatest thing ever, as well as other features. One interesting feature which is really more of a marketing ploy is connecting other devices made by the same brand to this TV and just being able to use the TV's remote to control that device. For example, buy a Sony TV and a Sony Blu-Ray player, and you can control the Blu-Ray player without reprogramming your remote. Good if you don't want to buy a Universal Remote, but I see it more as a way to get you to buy more components from that brand. Your choice!
So there you have it. I can say with a lot of certainty that you will be pleased with any of these three models, and it's more a matter of preference for a certain brand, pricing sensitivity, and the sound issue that you have to make up your mind. As for me, I couldn't be happier with my Samsung purchase.

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16:9 Aspect Ratio, 15000:1 Dynamic Contrast Ratio, 1920 x 1080 Native Resolution, 178/178 Degrees H/V Viewing Angle, 5ms Response Time, (3) HDMI Inputs, (2) Component Inputs, (2) Composite Inputs, ATSC/NTSC/QAM Tuner

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