Daily driving and weekend trail rides easy to moderate difficulty? (265/70/17 or 255/75/17).
Having a tough time choosing so pics and or stories would be great!
I would do the 265/70s for choice, which I did, as others have said but there are also a lot of good ones in 255/75.
I have ran the following brands and types in the past 5 years on 3 different vehicles (& in various sizes) so keep in mind road manners change depending the vehicle:
Firestone Destination AT, General Grabber AT2, Mickey Thompson Baja MTZ (two sets), Duratracs, Pro Comp ATs.
I would say on the XK run the Duratracs or Grabber AT2s out of the ones I've tried. The MTZs are by far and wide the better off road tire however. Probably the best tire I've owned and I've ran two different sets, 33x12.5 and 35x12.5.
All around the Duratracs and Grabber AT2s would be the best from what I've owned with the Duratracs being better offroad. The Grabbers are noisy at 45-65 kph. Between those two it just depends how aggressive you want them and how good off road, on the road they are generally about the same.
Also, for review purposes check out places like http://www.1010tires.com/
but always call the forum sponsors first when ready to purchase, of course.
Some sites like 1010 just have a ton of user reviews. Or...http://www.jeepforum.com/forum/f211/