Hey all -- been lurking quite a while and have learned a lot, so thanks!
I bought the 52a650 from Amazon and received last week via CEVA, no problems in about 3 days (I'm in Dallas)-- mfg date of 2/12/08; upgraded firmware and been playing with settings ever since.
So far, the only "issue" is MAYBE a slight flashlight in the upper-lefthand corner, but that's probably a stretch. Haven't noticed any clouding; since I don't see anything that bothers me during normal viewing or gaming, I doubt I'll go looking for it (it'll drive me nuts if I have some then...).
In regards to the purple tint, I don't see ANY... on extreme angles, pic just gets slightly washed out, but no purple; backlight is at 5.
The bezel is REALLY slick, I love the red-- as many other's stated, it's so subdued, you hardly notice it. Screen is semi-gloss and seems perfect for me-- I watch in a semi-lit room (just two lamps to my left and right.
I initially purchased a Toshiba 52HL167-- it was a nice TV as well, but 120hz seemed worth it to me; comparably, I think the Samsung wins out hands down. I find SD looks much better as well. Overall, I'm REALLY, REALLY satisfied with this TV. Hope this helps those on the fence!