Perhaps the ninnies should learn how to do a proper root cause analysis? I'm thinkin' it's NOT the heads that are the problems but something else? There's too many high mileage H3s like mine that are getting HAMMERED with no problems. It's not a head design issue in my opinion. I've got 53k (yeah, not much by some folks standards) on our '06 3.5 and believe me, half it's life is spent at full throttle (poor thing needs a little less ass or a little more grunt). No engine problems as of yet.
Neat thing about the little 3.5 is that driven properly, I can exceed 19mpg. But, driven hard, I only get a little over 15. It does indeed reward a patient foot!
Now, if I could just get a set of BFG ATs to last more than 25k!!!!...
