When you test rode them, which fit/ felt the best. Which did you like riding more.
That's the "better" one.
Other than that, the biggest difference in geo is that the Trek's head tube is a little taller, allowing for a slightly more upright position. But essentially, hardware-wise, the bikes are very similar.
Shops matter as well, so place some weight on the better shop when deciding. They'll prove a valuable resource in a number of ways.
Last edited by PJ352; 05-02-2013 at 10:15 AM.