Just thought I would do an update being that I poked around up here for so long and asked so many questions before I bought a 2013 mega. Love the truck! Have 12,000 miles on it now and have been more than satisfied. After having 2 powerstrokes, and 4 duramaxes this is by far my favorite. It rides better than my 2012 duramax I previously owned, gets better fuel mileage and has way more room and functions. I have noticed the clunk in the tranny seen on the forum from time to time, but after owning 8 HD trucks and other brands I can say that they all have certain issues. It is nothing that concerns me or makes me think anything is wrong with the truck. I hope this helps anyone considering buying a new one, and thanks to everyone who answered questions when I was looking.