It may not be the best (pretty high-end) for those specific needs, but the people are great, friendly, expert, active in the community afaik, and will point in the right direction if they can't assist:
Fairwheel Bikes
Retail store location (for Tucson sales/service):
1110 E. 6th St.
Tucson, Az. 85719
Retail store customer service: (520) 884-9018
Warehouse location (for picking up orders placed online):
503 S. Park Ave.
Tucson, Az. 85719
Webstore customer service: (520) 624-3045
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