What I want to find out is: 1. is it economical compared to a 3500? how or how not? 2. is this year/make/model unreliable for any particular reason? 3. what are the yins and yangs of owning and operating one of these vs a 3500? 4. is this version of the duramax better or worse than any other? We have been running an F350 for the past few years as our primary haul truck with a 30' dual tandem. The backup truck is an older C3500. Looking at replacing the F350--what would be your thoughts on the change? What is the good and bad in switching to the c4500? Are operating costs roughly even with a 1 ton? Thanks! EDIT: Um, that should say "General Questions" in the title. Sorry about that.