You're posting in the Class A section of the Forums, so you're going to get pretty biased opinions towards Class A. I, too, prefer Class A, obviously since I bought a Class A, for the reasons stated above me. Ultimately, you will have to decide which is best for your application. You need to spend a lot of time looking at all options on both types of RVs. In fact, don't rule out a pull-behind or a 5th wheel until you decide for yourself AFTER looking at all of them and considering the pros and cons as they relate to YOUR preferred method of travel. Go to RV shows. Go to sales lots. Look around online. Look at friends' RVs. Talk to them. Rent both a Class A and a Class C and drive them around on trips if you haven't made your decision yet. You are going to spend a lot of money on whatever you buy so you'd better be happy with your purchase!!
Good Luck!!