If you are looking at CJ's, I'd go with a 76 or newer. They made some pretty significant changes to the CJ5 that year, along with the introduction of the CJ7.
I like 5's better, but if you want an automatic or overdrive you have to get a 7.
The transmissions kind of went to junk in the 80's, but the transfercase got much better. 83 and up have a computer controlled carberator, 83 and up CJ7 have wider axles. All CJ's after late 77 had disc brakes up front.
These things are kind of like lego's, and almost all of them have been hacked or rigged to some extent so you really need to make sure you are buying what is advertised. The floors rust, the frames bend near the front spring hangers. Look there before purchasing.
A 1980 to 81 CJ5 with factory v8 might be the best mix of modern brakes and offroad worthiness.
Freakishly tall people ***** about 5's, but if it doesn't have seat sliders you can add them from any 76 to 95 Jeep. Aftermarket seats do hit the rear inner fenders when on sliders so watch out for that.
If you want a YJ I've got a 1990 with a 4.0 swapped in and an 8.8 axle, slip yoke eliminator that I'm wanting to get rid of in the $3500 range.
[This message has been edited by robertf03 (edited 7/27/2008 12:59p).]