Got a 42" LG 1080 HD TV for Xmas in 2011 and liked it so much I added a 47" in 2012.
About $500 on sale.

Trust me, once you get a large 1080 (not 720) TV you will find it hard to live with a standard size screen.
No more reading glasses!

As mentioned in an earlier post, if you go with 2 large screen TV's get the same size or your extended desktop will be slightly large on the bigger on, even at the same resolution.
Only slightly annoying.

I'm using Win XP on a Dell desktop.

Carkins