Well I drove a 4.0 for 11 years and 125,000 miles, then I took a test drive in an 07 WK Hemi, took it out on the Northern State Parkway out here in LI and hit the gas...well...that converted me to the Hemi religion...just like a '69 Charger off the line, power everywhere and not so bad on gas either. BUT, when the complexity of the WK really sank in, I decided to keep the old 98 ZJ 4.0 in case any of that wiz bang technology gives me fits. I do still like the simple 4.0, so I have both. The ZJ I use for most of my local driving and beach 4 wheeling, the WK for boat towing and road trips.
2007 WK Limited Hemi QDII
1998 ZJ Laredo 4.0 Selectrac