Had my Toshiba 52 inch DLP HDTV for two years now. Love it! The picture quality (especially in HD) is outstanding.
What Regina said about lighting is very important. Plasma is not a friend of bright light. It might be a Toshiba thing (how they handled it) but side viewing or strange angle viewing of my DLP is actually very good.
Hope you have a surround sound system to go with it. It really makes the investment worth it.
As for LG? When they first came out they had a rep sorta like what Hyundai was like 15 years ago. Now? They produce top notch stuff. Have not heard any complaints about them in ages.
PS. Prepare to watch shows you never thought you would for a while with the HD channels. I watched the most boring shows ever on PBS (piano lessons??) just because the pic quality was so insane
