My first TJ, i went with skyjacker coils and shocks, 4 inches. i added 2 inch bodylift. i used Teraflex lower control arms and stock uppers. i ran 33`s in various brands. That jeep was open difs and i wheeld the snot out of it. It had insane flex. i only ever had to replace the stock uppers once. i also replaced shocks once.
i also drove it pulling a small tralier to Tellico from Toronto via NYC and DC, about 2300kms. Straight shot back 1800kms. Good onroad and offroad.
Here it is on TSL`s 33x15,50
Next i got a Rubicon. i went with RELA 5.5 and 1.25bl and 1" mm. i had bilstein 5100's in it. i ran 37 MTR's. i drove it towing same trailer to Moab from Calgary (1800kms one way). i did EVERY tuff trail. i drove it home. i did destroy the raer driveshaft and joints. It let go in Moab when i arrived. But, drove it home. It performed well. However, my only complaint was the unloading of the front end. IF i had used a small winch to hold it down like a limiting strap, it would have been a little less white knuckly at times. i never went over backwards though.
Here is a pic from the same spot as the TJ above on 33's.
i did have Chromollys front and rear but i still snapped the axleshaft. i went to CTM ujoints after that and never broke again.
If you want to see how it did in Moab, here is a link (all the sub albums are on the right side)
http://s6.photobucket.com/albums/y217/Spinalguy/Moab%202004/