Originally Posted by MassLiberal
I like them both, unfortunately. It comes down to whether I want the lighter IF or the 9 speed, newer atlantis.
Fit is most important. The eight vs. nine speed issue is pretty trivial. You can always replace the cassette and shifters (only!) to go nine speed if you want. You probably won't be able to recover the two pound difference if you go with the heavier bike, though.
What kind of wheels are on the Atlantis?