Really torn between the Trek 7.3 an 7.5. I'm mostly using this bike for commuting, in Manhattan and Brooklyn, doubt I'll ever be going more than 20 miles in a day. Is the 7.5 worth $250 more? I don't want to have to upgrade again, but wonder if the difference in these two bikes is that noticeable.
I'm upgrading from a too-small Trek 7000, I want something a little faster and lighter and better-fitting.
Thank you for your help!