I don't like the roof racks, I'm 5'2". I would have to carry a ladder with me. I like the hollywood team rider(which they no lnger make) or the saris cycle-on. The tray type of carrier will carry ANY bike, kids, womens, and FS. The carriers that use the top tube to hang the bikes, limit the type of bike you can carry.
P.S. I've seen bikes taken off a roof rack, and they are covered with bugs.
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We're gonna have the hap, hap, happiest Christmas since Bing Crosby tap-danced with Danny ****ing Kaye.~Clark Griswold