I think discs are only a significant benefit when riding in the rain or wet. So, are you going to ride in the rain or wet?

I have discs on my latest; I really like them. Easy to maintain and the bike stays clean.

If I were you, and had to get a Trek, I'd get a Pilot 1.0. But among those two choices, I'd get the the FX. BUT, you seem to like the SU better. So get what YOU like.


You could put knobbies on the SU and it would be like a rigid mountain bike. So if you want to hit the local singletrack, get the SU. For fun rides on the local bikepath, get the FX.