Not to go against your preference, BUT, I've found that tryong on a few styles/sizes/brands, and seeing what you like, then buying online is the best method. This way you know what you like, and you can get it for a much cheaper price.
By doing this you'll know that you're a size M in Landau, size L in Dickies and a medium long in Angelica Brand. You'll also know to avoid the drawstring Cherokees because they pinch at the waist. Now, I'm making all that up, but you see what I mean. You can spend a good 30min in a store trying on all the scrubs
you like, then about 30 min on ebay or allheart.com to order.
For example: I recently bought a set of NWT Dickies (pants and top) on ebay for about $15 including S&H. I would have paid more if I had went to a uniform store. I've saved probably about $100-$150 by doing this over the past few years.
If you're not into the bargain hunting, then Life Uniforms is a decent chain if you have any near you. Ask your fellow students-they may have a few local mom and pop type places they like.