The bike will get a little dirty on the hitch mount, but I'd rather wipe it off than mess with a roof mount. I have a Jeeb Liberty and finding a rack long enough to clear the spare tire was no problem. I think it was ~$100, but check for sales (this was on sale) maybe you can beat that. The folding ones are nice so you don't have to remove it to open the tailgate if you think that will be a problem.
Good Luck
Joe
