what do you experienced guys think about these trucks???

I'm currently driving a 2004 Century with a 48" sleeper, Mercedes 450HP, and a 10 speed in school. I would GLADLY drive this truck for a living. The cab is wider than many of the trucks out there, and offers easy sleeper access, even though it's not needed right now. I like the full locker setup, and the dump valve, but I ain't too keen on the 10 speed after most of my experience being with 13 speed and 2-stick trannies.(I have 10 years driving lowboy and dump truck, but stopped in the 90's). But, from my looking through the truck paper, it appears that the 10 speed is on 3/4 of the trucks out there.