You could go for a touring bike like the Galaxy or LHT.
A bit heavier but virtually indestructable.
XT hubs and mechs will see you through the winter grime and salt, strong wheels and a steel frame.
Multiple bottle fixings, take mudguards and a rack with no toe overlap to catch you out at lights.
It's all about keeping the bike on the road, day in, day out, and i don't think there's a better bike for the job than something that's been designed and specced to be ridden all day every day.