Honestly, if you want to get into more serious rock crawling than you're doing now, you don't need to trade the XK in for a JKU. You need to make yourself an offroad beater and tow it to the trails with the XK. You're going to break stuff on the rocks, regardless of which vehicle you go with. And as you've seen (both first hand and from other members on these forums), the capabilities of a properly equipped XK are right up there with the best of the wranglers.. and will surely leave the lower end models behind on the trails.

If you want a JKU, get it.. they're great vehicles. lol just stop trying to justify it with gas mileage. JK's are a dime a dozen on the road for a reason... aftermarket is huge and everyone wants one.

oh, and have fun blending in with the rest of the crowd