Best (Affordable) Nursing Bras?

Kailee
I'm due with my second child at the end of October, and I'm starting to look around for nursing bras. I'm only going to pick up 1-2 before he is born since I know my size may change a little once my milk comes in, but what brands have you found to be the most comfortable, effective for nursing AND affordable? With my daughter, I found it hard to find good, supportive nursing bras for my small chest (34A even while pregnant) that didn't stretch, get lumpy over time or not fold down well for pumping at work. Any suggestions?