http://www.allenracks.com/products/trunk/103a.html

This is what I have - easy on, easy off. Takes about 30 seconds once you get the straps adjusted for your car. The 103 holds 3 bikes, but there is a 2 and a 4 bike rack as well. I think I paid about $59 for it 5-6 years ago.

THeir website has a rack finder feature as well - enter your vehicle info and they tell you which style rack will fit.

Only complaint I have is that it does not fold up flat for storage, but I can live with that.