I've had the 537H for nearly 3 weeks and give offer my observations so far. This is coming from a user with no LCD owner experience, as both my former tv (KV-35S65) and present computer monitor (CPD-G420S) are Sony trinitrons.
The set itself is all black except for the "Olevia" emblem which appears to be an unobtrusive dull platinum color. As a personal preference, I think a flat black bezel is by far the best frame to have around the screen. At 53 lb, I can move the tv with relative ease, or at least relative to a 150 lb CRT. The remote is decent, as I have seen far worse. Works well and doesn't have to be pointed directly at the sensor as I have read was the case with last year's models.
Menu/Controls are a mixed bag. The "rotating wheel" menu system works ok, although a little odd. PIP/Split Screen has some annoying limitations (only HDMI is available with the tuner). Zoom 1 and 1:1 pixel mapping come in handy. Source button has no "back" feature, so if you miss the correct input you have to cycle through all of them again. I do like the dark/medium/bright room settings.
HDTV from cable is anywhere from pretty good to downright jaw-dropping. It really depends on the channel and/or the program. Colors are spot-on with virtually none of the red push I have seen on several lcd screens over the years. Motion lag is minimal. Dark scenes can be weak, but that is inherent with all lcds.
SDTV, depending again on the source, can be anywhere from really ok to ugly. To be fair, some of the channels that looked bad here also looked bad on my crt. The crt just does a better job of hiding the defects. Colors on SDTV by contrast are all too vivid. I am not sure why that happens. Overall, the sd channels looked better than I thought they would.
DVDs from my Philips DVP 642 over a component connection looked horrendous and I was very disappointed. Played around with the settings for a while and gave up. I didn't need it anyway.
PC input is very pleasing overall. I have a self-built Athlon X2 4400 computer with an ATI X1900 AIW and Windows MCE 2005 in my bedroom attached by a 35 ft component/digital coax cable to my receiver and tv in my den. DVDs and Divx/Xvid look really nice with good color and clarity. Text is ok with just a slight blurriness, but very usable (I am typing this on the tv now). Games are fantastic, but there is a bit of motion lag that I have more than gotten used to. The Matrox Reef Demo at 1360x768 is flat-out stunning.
To sum up, I am even more pleased than I thought with this purchase. Leaving the comfort zone of the CRT was a difficult choice for me, but I think I made a good choice. At a purchase price of just under a grand, I give this set two thumbs up.
I don't really know anything. I am just repeating what I have either heard or read elsewhere.