Something that I didn't see pointed out is a Touring bike is a more upright riding position then a Cyclocross. The top of the bars tend to be near the seat height sometimes higher. The drops let you tuck when fighting head winds but when cruising you can ride on the hoods in a very relaxed riding position.

Cyclocross is more of a race position. The cyclocross also tends to have shorter chain stays (distance of the rear axle from the crank). This will cause more problems with heel strike on Pannier (heel hitting bags while peddling).

I have commuted on a Rigid mountain bike (no suspension) with street friendly tires making it like a Hybrid. A Sport bike, a race bike and a touring bike. BY FAR I like my touring bike. I rode my Mountain yesterday and it took me a full 5 minutes extra time and a lot more effort to get to work yesterday. The head winds I fought on the way home totally suck. I'm ready to put triples on my race bike or sell it. I just don't get any use out of it as a commuter and I don't race. I picked it up to do sunday rides and centuries but the gearing just sucks. I'm looking for constant speed and a 42x22 low sucks on the hills around here.

While with the touring frame I did give up some sportiness I picked up a LOT better ride, Larger more durable tires (I run a 700x35) and triples. I overall average 15mph including hills that I have plenty of. the Mtn/hybrid I was lucky to get 11mph.

If you live in the hills triple cranks are a must. I participated in a Metric a few weeks ago and all these folks on "race Bikes" were hating life 50 miles into it with double race cranks. I was passing them on the hills since I could gear down. It was really chapping their behinds to get passed by a Touring bike in full "fred" with racks, fenders, AirZound and a large trunk bag. LOL

Many cyclocross bikes have triple cranks so if you are looking for the sportier ride to dart in and out of obsticals they would be a good choice. Most will except a 700x32 if you have rough roads that will take a lot of harshness out of them. It will be faster then a Touring but not as comfortable over long distance since it is more of a race position (bars lower then seat).