I have a Z71 Duramax and love it. Only thing I hate is the tiny fuel tank. (25 gallons) I used to hate Fords b/c they were so plain on the interior but now they are sweet. Just too rich for my blood. A macked out F250 will run you $65-70k.
One of my buddies just got a brand new crew cab 4x4 Tundra. I drove it the other day and that thing is sweet. I just gotta have my 3/4 ton for pulling goosenecks, big trailers, and my boat.