I wasn't sure if a 58.3CM top tube fits me or not. My old bike has a 60.96CM top tube and I rode it for years. I always thought the bike didn't fit me correctly and that might have been the reason I hated ridding it.
Bruce Darby
I'm also 6' and usually ride a 58~59CM top tube with 110 or 120 stems. At your height, unless you have an unusually long torso or arms, I would suspect that the 60CM Calfee could be configured to fit you better.
-------------------- Steel lover, but then I like Ti with carbon too.
Licensed bike geek.