Well I decided to spend a little money and I bought myself a 2008 GMC Sierra 1500.
This will be replacing my 1999 GMC 1500 which had 266,000 miles, it still towed my 5th wheel just fine, I used it today to bring the 5th wheel home from storage.
I am taking the new truck to get the rails installed later this week.
It also came with air bag suspension which is a plus I guess.
I am very happy with the power and the ride. I took my grandma and her sister to the casino in it yesterday, about an hour ride each way, and it got their approval.