My 2 cents....
My bro has an auto in his cherokee of course with the 6cyl...
Problem is, with 33's he gets like 6 mpg... He's always complaining... It has stock gearing cuz he's too poor to regear the stupid thing... I drove it about a week ago and whoa, that thing is gutless... Going on the freeway the RPM's are right at 3k just to keep it going with the flow (about 65 - 70) Now in my Jeep... with the 6cyl the manual and stock gearing as well with 33's... I can push 80 on the freeway (i know I know, I'm gonna kill myslef!
I'm not gonna tell ya about the time I hit 100 (or more, i dunno
)) and my RPM's are only at about 2500. That's what I love about 5th gear!
Now to the 4 wheeling part of my 2 cents... I like how he can go pretty slow up hills and not worry about rolling back on hills with the clutch... That's the nice part of the auto... But then again, going down hills even when he puts it in 1st it still seems to shift through all the gears and go faster, so he has to use his brakes and cannot rely on the engine's compression to slow him down.
In my Jeep I hate hills, sometimes thats my worst fear, but sometimes I don't worry about it and just start it with the clutch engaged in 1st gear and give a little gas. I love how going down hills (even with stock gearing) I just crawl and usually don't need to use my brakes... I love that how the engine just slows you down. But, I hate trying to shift down big hills because when I put it in Neutral (clutch in) it seems like I have to slam on the brakes to keep going as slow as I was.