I had a '95 YJ with the 4 banger. 3 inch body lift, 1.25 inch shackle lift with 33x9.5 mudders. It was great but fifth gear was not going to happen except down a long steep hill. My ex killed it so I never got a chance to see to the axles. It was a great daily driver.
I currently have a '04 TJ with the I6. I love it so far. smoother ride than the YJ. With 31s under her I just got back from a 60 mile run through the woods and averaged 20MPG. I was happy.