sorry to bring up an old thread, but i've done a bit of research on this recently and thought i'd offer my $0.02...
i've found that shipping bikes by FedEx, in general, is lower cost than UPS (unless you are a high-volume business shipper with UPS and get a big discount already) FedEx seems to offer better rates for heavy/bulky stuff.
we ship all the bikes from our online store (
makaibikes.com) via FedEx