The staff at Rapid Transit is VERY knowledgeable. They also take the time to get to know eactly what you want before they try to sell you any shoes. And, they let you test them out side and watch you run so they can check your pronation. Great for beginner runners who don't really know how to shop for shoes.
Also, they sell you the shoe that is best for you--not the most expensive. When I went in, I was leary, because they don't have Nikes, the shoes I've been using for 3 years, but I walked out with a great pair of Brooks and I couldnt have been happier.
They also have a good selection of other running products like shorts, shirts, water bottles, etc.