A couple years ago I sold my crewcab Tacoma and bought my Blazer. I daily drive it to work in the winter and take the Harley in the summer... It doesnt get the best MPG but it averages out over the year with bike... A C10 with the right gearing would be better then my K5 as far as MPGs...
My trucks not pretty (for now) but there is no payment. It hasn't left me stranded, is easy to work on and not expensive to maintain... (PS: this doesnt include the $$ you spend to customize it how you like)