Just curious what works best for folks. My bike is primarily a commuter, but when I add a new part, I like to keep touring in mind, and I expect when it comes to brakes there's not much difference. But I wanted to ask on the touring forum because one thing I want to avoid is conflicts between my front brake and front rack. My current set up is pretty tight squeeze (currently it's a crown-mounted headlight that's uncomfortably close to my brake line, but before that it was a front rack attachment that barely worked).
I'm looking at Shimano Deore, and I'm unclear as to the differences between the M590s and the XTs, other than about $20. But I'm open to other suggestions.