What would be a good, normal TV to buy?

I’m looking to get a new TV, but I have a pretty minimal understanding of all the HD, LCD, blah blah blah… I don’t know anything about TV sets is what I’m saying.
I’d prefer a flat screen TV measuring at most 25’’-27’’ (is that reasonable small-med size?) or so since I don’t have much space in my room. A decent picture would be nice, but I don’t need top of the line picture quality. Most of all, I want something dependable that will last a while. I don’t want to have to buy another one in 2 years.
Those of you with TV knowledge, could you help me out? Maybe make some suggestions?