My other passion is photography. I can't tell you how heated the debates on Nikon v. Canon are on that forum. I expect Trek v. Specialized may be more of the same. Both are great bikes and, when it comes down to it, only you can decide which one (assuming they both fit you) feels better FOR you. I love my Amira. My sister loves her Madone. We're both right. You are just going to have to ride them both and see how they feel.
PS, but in the Nikon v. Canon wars, I give the edge to Canon.