Root 66 has a great pun in the name, since it's located in a former McDonald's on the former "American Mother Road", Route 66. I admit, I would give them a five-star review just for the pun, but they also have a staff that is both friendly and knowledgeable, their location is convenient (not just for me but for almost anyone in South City), and their prices are more than fair (or awesome, when things are on sale). Bonus points for their SMS sale notifications to remind me when they've put something I've liked (or wanted to try) on sale.