I'm looking into trailer hitches for my 2013 Prius C2. I have always used the USA style drawbar (square 2" bar). I see some new hitches out there with EURO style drawbars (round tube with permanently attached balls). Any thoughts on which one to get? P.S. I think the EURO style looks distinctively different. But that may only be me. Pro's --- Cons ??? Also, how much rise do I need on the Ball for the 2013 Prius C2? John