I'm a fan of bike racks that accommodate a variety of frame designs and wheel sizes and need no wheel removal. I had a Sportworks for years (consumer division now owned by Thule, T2 is basically the Sportworks design) and now run T2s, both hitch mount and roof mount (I have a shuttle van that I use professionally that can accommodate 2 bikes on a front hitch mount, 4 bikes on the rear hitch mount and 9 on the roof, but usually just use the 2 bike version on my SUV for my own needs).
While I can still come up with a complaint or two about the T2, they are the best out there that I've seen. Especially for suspension mountain bikes where hanging style racks don't work at all (had a hanging style Thule before my Sportworks, it killed a frame on an offroad adventure as it didn't fit well on the rack, got rid of it when I got home and had to replace the front triangle of the bike). I have used/use the Sportworks/T2 versions on and off road, have racked up many thousands of miles, no problems. The 4 bike version is heavy, but comes apart if that's an issue. I use cable locks for light security (full security means the bikes come inside), not worried about someone taking an empty rack.