Sorry that your original question seems to have gotten lost along the way, but that is what generally happens with most. As far as the question, I think that it hasn't been out long enough for anyone to form an opinion. I've been watching at a couple of dealerships, one just average sized and one quite large and neither have been able to get one with the new 3.0
As far as owning and driving its like most everything else, ask 100 people and you'll get 100 different answers. Several of my friends have the HD's with diesels and they all like the power, but most don't like how much more they cost to maintain and drive everyday. Now having said that, they all said they didn't regret buying one and in fact most said they aren't likely to go back to gas.
I guess it all boils down to what you want, when you find one at the dealer, go drive it and form your own opinion, after all, your the one that is going to pay for it