Aaaargh. Please help Viridian select a new TV.

I barely understand audio, never mind video, but my old TV finally bit the dust and I need a new one. I can't make heads or tails out of the specs, liquid crystal, plasma, DLP, sounds like my doctor's office. 1080, 720, Blue Ray, whaaa? So here is the basic info. I sit 12' from the set, on axis, in a large room that does not have any glare or excess light issues. I watch movies on DVD frequently and tend to keep my gear for decades. I generally don't chase the SOTA, just like something reliable and enjoyable. Suggestions as to screen size, technology and brand name are greatly appreciated.