I am an IPS fan out of necessity, on computer monitors anyway. I found I couldn't stand the horizontal viewing angle shift from PVA screens, it literally made me dizzy. TN doesn't but they are pretty bad to look at for vertical viewing angles. I now have an NEC 2490. IPS screen with a special polarizer. It is awesome. Almost like CRT. But for a TV where you don't sit so close, this shouldn't be quite as important.
I went looking at LCD TVs in big box store. Viewing angles in descending order.
The best viewing angles were on a 37" Panasonic with it's IPS Alpha screen.
LG was hit and miss. I think some of their screens are IPS (but not from Alpha, these are LG IPS, I think Alpha IPS is better) some not. The top end (LG 60 and 70) had very good viewing angles as well, the lower end not so much. I think they were different screen types.
Top end Sony/Samsungs were next. These have real Samsung PVA screens that do have decent viewing angles with some center viewing black crush and you can spot the shift.
Worse was the Sharp screens. These are terrible IMO. I don't know how these sell.
These days there is so much panel swapping between brands it is hard to tell what you will get.
