I have the Vizio GV42L, 42" LCD. I'm quite pleased with it, no real problems with it. It gets a lot of use since it is in the family room. I don't think I would put it in my home theater, but for an everyday TV it does the job and the price was really worth it. On standard DVDs in 480p the picture is very sharp and clear. On HD TV broadcasts, like Discovery HD, it is breathtakingly clear. However, the damn edge enhancement is often distracting and can't be disabled.
At Costco last week I saw the new Vizio 1080p LCD and it too looked pretty sweet. If I hadn't already bought mine I would buy the 1080p panel.
Now for my media room, I'm either going with the Sharp 92U or the Samsung 4665F.