I bought one not too long ago but returned (65hm167) (Does former owner count?). I was blown away by it at first. It was huge at 10 feet, nice upgrade from 55inches. And the great slim cabinet of this model actually was a hair smaller in all directions compared to my dumbo eared 55inch Sony.
Sadly though, seconds after turning it on I noticed a black marks near the center of the screen, so I knew I'd have to exchange it.
I first tested trailers and games off my PS3 in 1080p. The "Bee Movie" Trailer 2 looked nice, had regular video and cgi scenes, bright bumble bee costume with great yellow and deep black stripes, then they kill the lights on the set so the scene nearly goes all black and looked good on this tv. Though, some SSE really popped out in the first shot with some prop giant flowers, the rest of it I hardly noticed.
I tested Gran Turismo HD. Never noticed SSE there. The opening 1080p trailer looked amazing. With a lot of telephoto shots of cars they were so big it almost seemed like they were going to come out of the tv. And in game the response time seemed to be great.
I watched Blu-ray Night at the Museum and overall it was darn good looking, don't recall SSE ever jumping out at me. Nor did I see much rainbow even though I see it often. You kind of just need to accept the tv and forget about the flaws and suddenly they can mostly go away.
Overall I was pleased with the set, but I was really concerned I saw rainbows and when I did notice SSE it was really really strong, more than I'm use to. And either it was all the reading on the forums and allergies I couldn't tell if that was causing eye strain or the tv. I chickened out when I was able to get the Sony 60A2020 for $2250, costing me $350 more over the Toshiba.
When I got the 60inch Sony the picture was good, no rainbows of course, and SSE was there but not enough to annoy even when I looked for it, but man did I ever miss the 5 inches from the Toshiba. The newer sony, while greater picture and deeper blacks compared to my older 55inch Sony, though, the 60ich size hardly felt bigger for the cost of the upgrade. And I haven't had as many wow or 3D moments the Toshiba had.
I begain researching the Toshiba more again and ended up where I could get it from again but for $200 less than before and I figured it would be so cheap I could live with rainbows and a bit of SSE until newer better stuff comes along and I won't take as much of a loss as the Sony's price. I went out with all the paperwork and checked a store again to take on more look at it.
I was so sure I'd switch back but when I saw it in the store the SSE seemed way worse than I remember, even my dad saw it, and not just bright whites, but mid range solid colors and deep blues. I didn't know what to think, maybe the settings in store and lighting made it seem worse, but it was going to be too big of a risk to get it a second time and return the Sony if I regret it. Some people say they got SSE to acceptable levels with adjustments.
Also, to those thinking about it and worried about SSE effect, still give it a chance if you can get it locally with a return period. It's so hard not to be critical on a new purchase and you want to look for these flaws everytime you watch. But I think over time you'd notice it less and less as with my experience on my Sony 55inch LCD RP. It has strong SSE around the center, I had it for 2 years and for the life of me I can't recall the last time I saw SSE, could have been over a year. But after looking at screens for SSE and seeing my old tv once more at my Dads I was seeing SSE again on it because I could not help but look for it like on the recent new tvs.
So I guess it can be all in your mind. Maybe I can go get hypnotized to not see SSE and rainbows and forget it exists