If you want a "pull and go sled" then the 2006 is the best. They are absolutely fool proof and they flat out rip. I have seen on 07 that i was impressed with, and the 08's are beginning to be dialed in. Just my opinion.
Actually he did not know I had a '06, he is not my dealer, I have never spent a dime in his shop. I just happened to be in a different town stopped in to do a looky loo and we asked them what was changing, how was the clutching issue along with the other issues being delt with. Oh yea then got the price of a new one.