DONT BUY A JEEP! They have a tendancy to eat money out-of-your pocket, make you cry like a schoolgirl, stay up too late trying to fix a problem that "takes an hour", and if you do end up selling one; within 6 months they make you buy another because you miss the horrible ride and bad gas mileage and the ability to get up to 70 on the hwy.
I tried to get away 4 times from Jeeps. 86 CJ (my first love, fiberglass body straight 6, 3'' lift 33's), 95 YJ (4cyl pretty stock), 97 TJ (3'' lift, 33's), 89 YJ (amazingly clean with sweet rims and tires), and currently 91 YJ (just finished doing my "$100 do-it yourself paint job" that costed my $500. If i had never owned a Jeep I swear I would be rich, or if I stuck with my first one I would have been happy but not rich. For some reason I wanted power windows, leather and cruise control, stupid me.
If that doesnt scare you off you can enjoy cruising with the top and doors off and going places nobody else can get to. Gaining numerous new friends due to "the jeep wave" and getting looks everywhere you go, and the best is that you are original in that your Jeep will not be like any other due to the endless amount of accessories and parts you will end up buying (today paypal took a $300 hit). I went with clear 4" s/t/t lights with red diodes as my red ones were starting to burn out diodes, new stainless steel rocker panels, a new hood catch and hoop kit as the black didnt look nice on the new paint, of course new JEEP stickers for the new paint, and some neoprene seat covers. Anyway, thats for another section.
Back to the point of my rambling, my advice is buy the right one the first time and stick with it. If you really want a 6cyl TJ and wont be happy with a 4cyl YJ then wait for the right one to come around. You wont regret buying a Jeep. If for some reason you do sell it they hold their value really well (at least in NE WI).