Need To Upgrade TV

All you audio video guys, hep me out. lol I need to upgrade our TV. It's always had a very dark presentation, no matter how I set the picture. But that's kinda irrelevant here. Ours still has RCA inputs. lol I have a small DVD player plug into it, as some of you know Kitty and I have an extensive dvd collection. I do plan on converting them to flash drive files "one day", but that day is not here. What are my options here? I am more than willing to also upgrade the dvd player too, but with as much new things as are out there, I am lost. As usual with us being on a limited, fixed income, price is important, but I've done some preliminary looking and I see I'll probably at least have to spend "around" 500 give or take, unless I don't know what I'm looking at......which is entirely possible. What we have now is a 32" flat screen.