I commuted to work for a year on an aluminum bike with a carbon fork (Fuji), and when the road was in good condition I was ok with the ride and the bike was fine for the purpose. But several large areas of construction just killed the roads. They got rougher and rougher, and our city just can't figure out how to do what we do every day when we budget our lives and it is broke. So fixing the street is like eventually sending out a crew to cut square holes and partially fill them in. I would rather keep it all broken up but somewhat level instead of big square potholes. Well, it is just horrible.
The bike did not have clearance for wider than 28c tires, if it did I would have thrown some 32c or 35c tires on there for the extra cushion. I also wanted fenders as the road dirt was just getting flung on me. So I ended up buying an REI steel bike that took fenders and has 35c tires. Yes it weighs maybe 5 lbs more than the Fuji but between the nice plump tires and the steel frame, it is so stable and it sucks up the chatter. I don't feel beat up when I get home. Yea I am a little slower but I am not looking to race here, just get home feeling good.
That Allegro comes with 32c Vittoria tires that will help with the road chatter and you could probably go wider for more cush if needed. Unless the roads are really bad I doubt the ride would be harsh. The Coda only has 28c tires and I can't tell if wider tires would fit. The gearing is very different, the Coda has a touring type triple up front and goes to a low of 32 in back while the Allegro has road gearing that does not go down as low. If the roads are really hilly I would give the edge to the Coda as it sits. But if it were me, I would get the Allegro, and if lower gearing were needed I would swap the rear derailleur for a medium cage one and use a cassette that goes to 32.
Yes this is a tough call and it may be hard to find both to test ride but don't count out the aluminum- it is only one factor of many. My Fuji would have been great if it could have taken those nice cushy 32c tires.
Tzvia- rollin' slow...
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