Thanks everyone. I know it's a little outside the scope of the original question, but does it matter what type of 10 speed cassette I get? I can go the mtn route and get an XT 11-32 or 34 cassette, but I also notice there are Tiagra 10 speed cassettes that go to 11-32 (or SRAM road cassettes). I've seen some threads say it doesn't matter and others say that it does matter, that I need to get a road cassette.