I would recommend any men's wearhouse. Even though they're a little bit expensive you can pick your suit up and return from anywhere. Also have unique colors that can't be found elsewhere. Men's wearhouse staff in Arizona were awesome handling all our problems and getting us the look we wanted.

The groom, groomsmen, and fathers were all able to get their tuxes in correct vest colors eventhough they were spread out in various states for fittings. The day of the wedding we had a shirt snafu which MW was able to correct ahead of the ceremony.