Hi,
I'm getting ready to buy my first Touring bike. I was pretty set on the Trek 520, but the Airborne Carpe Diem also seems to be a good deal. From what I gather, the 520 is sturdier, but a bit slower. The CD also has a relaxed geometry, like the 520, but is lighter and faster. It's a tiny bit pricier, and because it's not steel is less durable and more difficult to repair. Is all that correct? What other important differences are there? Most importantly, does anybody have a preference between the two, and why? Thanks,

Harry