The Cherokee is an extremely capable vehicle that can be also practical. You can go and do errands around town, pick up furniture, and go rock krawling. The wrangler is limited here.
The unibody is, is interesting to say the least. It provides for some funny issues but as far as I have gone, I have been able to improve and/or repair any surprises I have had. I ripped off some suspension mounts on my XJ. I know stock mounts can rip off of the frame of a wrangler too so I don't feel too special. I do like the frame idea but again, the unibody is very workable (everything is structural so certain projects allow for interesting results).
The wheelbase is definitly an advantage (in my eyes). A covered roof and air conditiong (I live in a desert) are real nice. A nice stereo and higher security is a plus too.
Like it was said earlier, it all depends on what you want out of your Jeep.