Hi,
I just bought an H3 with the Adventure Package and love the thing
Given that I've bought nothing but Jeeps for the past 8 years, built up lots of them and driven over places like The Rubicon several times, this is either testament to how good I believe the H3 to be (or I'm losing my mind completely

).
Anyway, I'll be modifying mine pretty soon and getting it into the rough stuff to see what it's made of.
One comment regarding the "underpowered" engine.
Try taking a Jeep TJ Wrangler (Rubicon, Unlimited), lifting it, adding 35" or 37" tires, adding winch, bumpers, armour etc and see how fast and fuel efficient you think that is?
It drives fine to me and doesn't appear to be any slower than the Jeep LJ Unlimited I traded in for it.
-C