I have a Saris Bones 2 also a Thule (forget the model) that holds 3 bikes and recently put a hitch mount on my Caddy SRX and fitted a Thule Swingaway that holds 4 bikes. I like extra room on the rack so the bikes don;t rub on each other. Without a doubt the hitch is the best of the three. The main reason I switched to the hitch was the amount of downward pull on the hatch which is either light steel or aluminum and having to drive 1300 miles to Florida with two bikes and having to constantly open the hatch to let out my dogs the hitch was a no brainer. Also I can "not" use the Saris or Thule rack on my Porsche Boxster as it will absolutely pull on the light weight sheet metal and my wife's car also a convertible based on design. Your other option since it's not a convertible is roof rack.