100s are great for around town and for mild to medium offroad trails. Anything higher on the trail rating and its fun to watch if your not the one stacking rocks. The suspension can be very expensive to fix, but is very comfortable in how it handles. If you put a locker in the front then stuff breaks if you put much force on the front. Its basically a different level with a hundy compard to a 80. On a scale of 1 to 10, a hundy is about 3 or 4 clicks down on offroad ability. But its about 3 clicks up on luxury and cruising comfort. So it depends what your lifestyle points too. Yes some of the older ones had trans problems, but keep in mind too you are talking about transmissions that most people never change the fluid on because Toyota really doesn't recommend changing it. Toyota wants to keep up with mercedes whom claims zero maintenance on their transmissions. I guess they felt that would attract buyers. And they still feel that way with the 200 series. Although every time I have pulled the plug on a trans with WS fluid its black and looks terrible. At worst the trans will go out at 150k miles. If it was a ford you would be almost ready for a 3rd transmission at that many miles.