Here's Dad with his 07 2500 Duramax with Allison trans. It is extremely quiet and pulls anything he hooks too. He pulls alot of large travel trailers for a local company when they need them moved for shows and such.
I drive an 06 2 wheel drive with the 4.8. it is fine around town but is a slug when trying to pull on the highway. I have to use tow/haul and use 3rd alot.
I upgraded the wheels, looks alot better than the base model wheels in my opinion.
My knock around is this 95 Silverado. It's alot More fun to drive than the 06 but pulls about the same as the 06 on the highway... I wish I had a deisel ....
The 95 silverado has 370,000 miles now 
Tommy
