Hands down, this is the most solid frame-hold bike rack on the market. I bought this to secure my new Santa Cruz 5010.
I was coming from a Thule Big Mouth and it was scary going highway speeds in crosswinds, watching the 30lbs bike swing side to side 8 inches. This is not the case with the WB201, the rack keep the bike rock solid in place.
I will admit the price is steep for this security but if you're gonna spend $4k on a bike you'd better make sure it stays on your car.