If rock crawling is your thing, and you do not need the rig to be as reliable or be able to carry much in the way of passengers or cargo...you want maximum factory rock crawling performance, period...the Rubicon is hard to beat.

I went from a Jeep upbringing, to an X, as I got tired of fixing it (OK, the wife got tired of me fixing it...), and it couldn't carry enough stuff or people (Two kids, no where for the legs to go, etc...forget luggage).

If its just a toy for playing on the rocks, I'd get the Jeep...if its a daily driver and you need it to run and get you to work every day, and get dirty on the weekends, etc... I'd get the X.

If you do sand more than rocks, or do mud not rocks, etc...the Rubi loses its charm, as its really a rock oriented beast.

The X is well rounded, and works better as a daily driver than the jeep does.