Hi, I have been looking at installing a hitch for a bike rack on my 2012 Prius. I want it to be as invisible as possible. I know there is the ECOhitch available, but between the Curt, Draw-Tite and Hidden Hitch, is there any real difference? Is one less visible than the others? I have seen a few pictures and searched the forums here, but I thought I'd ask since most of the pictures are taken from ground level (hitch level). I'd like to see what they look like while standing 15-20 feet behind the vehicle. Thanks for any information.