Superior Photo has been around a long, long time, and the level of their service on cameras, film and processing shows it. I've been dealing with them since the mid 1980's and have yet to have a less than stellar experience with their staff and their processing service.
Probably the biggest plus I can add is the advice and straight recommendations you can get from their staff. From repair recommendations on your equipment to new camera and accessory advice, it is hard to go wrong with them.
Don't expect WalMart pricing. Customer service at this level costs money.