I use the
SportRack abr611 Nomad upright mount bike rack on my Pontiac Montana roof rack bars. They are really economical bike racks and they attach to the crossbars easily. The bikes go right up onto the racks without taking the wheels off and you just clamp the arm down onto the bike frame. It looks like Thule Racks has now bought the SportRack car rack company too. So that's pretty good news as far as a show of confidence that SportRack makes quality racks.
I'm pretty short so I have a tough time reaching the roof to mount the bikes. I also have the
Malone Easy Reach wheel step up. It mounts right onto any of the Pontiac Montana wheels and then you just step right up onto it so you have super easy access to the bike racks.