I suspect that both trucks have features you like and dislike about them. It appears that they are at least close in cost to you, OTD.
I can relay a personal experience I had with GM:
I purchased an 04 Duramax CC/SB used in Oct of 06. It had a little over 70K on it. My wife and I felt we needed the extra room of the full crew cab, and the mega was still too $$. We were very happy with the performance of the Ram/Cummins we were replacing.
Right away, the speedo quit working. Right about that time, a letter came in the mail from GM, that they were recalling the gauge cluster due to a bad speedo gauge. But, they were only covering it up to 70K. This is a $45K truck, and they were only going to cover the speedo (not a service-able part) up to 70K miles! I politely spoke with everyone's supervisor, up to the regional manager. Still, I had to pay for the repair. Mind you, that was a $600 part. I was very upset, but always polite and respectful when dealing with them.
Based on the attitude I got from corporate GM, I don't think I'll look to a GM product for the foreseeable future. That's too bad, because I really like the ergonomics and some of the features their products have.
My wife is bugging me for a different vehicle. One of the vehicles she wants is a P/U, and I can't bring myself to consider a GM product. I think I will be finding a Toyota product that fits that need.
I hope I did not turn this into a US/Jap debate, that was not my intention, I wanted to share with you my experience with GM, specifically.
PE