It's a double edge, getting your boobies fitted properly for a bra. On one side your ladies stand at attention, but on the other side, they don't get to rest like they did in your old saggy bras that they're used to.
However, if you do decide to get a "proper" bra, I say go get fitted at Secrets From Your Sister, the little shop that fits bras for real women (not big ladies or tiny ladies only.....ALL ladies, and their...uh, ladies).
My experience there was great. I felt totally comfortable and had a great confidence boost when I was told I was a whole cup size higher than I thought I was (bragging ensues). "I should have listened to Oprah a long time ago!" was what I thought as I bought the bra.