My recommendation would be to really look at what you want to do. Are you content with keeping it stock? If so, buy one and be done. If you are looking to buy something and then modify it, be smart about the mods. Understand that mods have a knock on affect that if not comprehended, can end up in you spending a lot or extra money. An very basic example would be changing the engine to get a few more horses. Well do you need to change the transmission as well? tCase? Axles? My YJ build has been an ongoing adventure since I bought it new. I'm now on my 3rd suspension lift incarnation and am getting the itch to put a 6.0L in it. It's a truly slippery slope if you're not careful but it sure is fun. Just be smart about it so you don't end up overspending. If I were in the market for another Jeep, I'd definitely be looking for something bone stock. I see too many rigs that the owners tried to modify only to end up with an abortion of a mess. I'd rather have it stock and then I can create the abortion myself :)
Cheers,
cc