Well I'm new here and just wanted to ask a quick question. So, I am in the market for a new truck and I have been looking at a LBZ or LMM Duramax 3500hd 4x4 (2006-2010) and then the other truck I was looking at was a 5.9 or possibly 6.7 6spd Cummins 3500 4x4 (2005-2010). Both the trucks would be crew long-bed dually and have the same amount of miles on them and right now I have a LLY Duramax and I have enjoyed the Duramax engine. So I was wondering what your guys opinions and experience with those trucks are and also the problems could be with each truck. The truck would be being used for a daily driver ,a welding/work truck and also used every here and there to tow a car trailer or industrial equipment.