I just bought the new yakima quickback 3 and i have to say it is one of the easiest and best trunk mounted racks i have ever used. It is extremely Sturdy and versatile.
The best part about it is it folds out into a C shape so it can accomidate a wide variety of cars. I have been told the most problems people have with racks is spoilers. I use this rack on my GF's 1998 Toyota Camry and it goes right around the spoiler without a problem.
So if you were considering getting this rack but have hesitated, go back and get it. It is well worth the price. You will be very happy you did. Heres a link for more info: