I have a 2011 GMC 1500. It's awesome. The GMC's have more heavy duty suspension and brake pads. You can also get the GMC in a 6.4 liter. I had this same dilema when I bought my new truck. I test drove about 20 GMCs and Chevys. I finally decided on my 2011 GMC 4x4 crew cab 1500. It's got a 5.3. It's very peppy and pulls a loaded two-horse trailer great. Also, this time of year if you buy brand new you can use dealer rebates and 0% 72 month financing on a 2011 model. They are really trying to get rid of them to make room for the 2012's. This time of year you can just about buy a brand new one for the same price as a used one.