Check out the new Swagman Sitkka
http://www.swagman.net/product/sitkka-2/
It has all of the nice features that you would want, i.e. it folds when the bikes are not on it, unlike the Saris, it also comes with internal locks. and it fastens to your wheel so no marring your frame.
It is a brand new rack that actually isn't available until April, but if you can wait it might be the best bang for your buck, the 2 bike will only be $299 and the 3 bike version $425.
I have the their Semi 2.0 (non fat bike) and it's been great.
I am friendly with the local Swagman rep, so if you need any info on where to get it feel free to drop me a line.