On the Trek Web site, the 520 touring bike and the XO 1 cyclocross bike
are categorized under specialty bikes, separate from road bikes. They
both look like road bikes, the XO 1 more so with a 46/38 crank set and
a
12-26 cassette instead of the 520's 52/42/30 and 12-32 (many gaps, more
like a mountain bike-style cassette). I would not be using the
32-tooth gear, but I would be missing the closely spaced gear ratios.

For reference, the 1000 road bike is set up as 52/42/30 and 12-26, and
so
is the 1000C "comfort" road bike.

On the Cannondale Web site, the T800 touring bike is equipped with a
48/36/26 crank set and a 12-34 cassette, and the Cyclocross bike, 46/38
and
12-26.

I like the cyclocrosses. What do you think?

-Jim