If it doesn't say anything regarding 100hz, it's best to assume that it is not supported - especially at that price.

If you want to get the most value for your money and be relatively happy with what you end up with, I suggest you get a list of TV's that are within your price range (and a couple a little above it) which interest you, and go check them out in person. See if there's anything above your price range that makes you say "ok I'll work a couple of extra shifts for that"; and if there isn't, just stick with a TV you are willing to pay less for.

For features/price, I think that Sharp which was linked to a page or so back looks alright, but it's always worth seeing the product in person before you jump for a purchase that's going to set you back that much money.

Also, be prepared to try and bargain with the retailers, see if you can get a good deal. You might be able to get a couple hundred $ off.

Just my advice...