Fall Flat Panel Lineup

I'd like to buy a flat panel from the upcoming new flat panels. But, I'm so confused. I can't separate the wheat from the chaff.

Here is what is important to me: 1) Artifacting during movements and paning is absolutely minimal, 2)I can see detail in the blacks (I'd rather see detail than the quest for the deepest black if that means blocked up details), and 3) whites are white and not gray, and 4) Size is say 42" to 52" or so. Price is less than $5,000. I don't know anything about plasma versus lcd.

I've seen Sony LCD's that I like, but they seem to artifact. I've seen the Pioneer, which seemed to artifact less, but seemed darker in the shadows. I hate the blocked up shadows and the artifacting. My observations were on models in the store about six months ago.

Having said all that, can you point me toward the best option or two? Thanks for considering my question. Jeff