Nursing bras.

Ana • 29, happily married, pregnant with baby #1
Hi, ladies! I'm just now starting to shop for nursing bras - my friend recommended Nordstrom nursing bras, said they are great, however, expensive. I just recently heard H&M has maternity line and they also have nursing bras for significantly less. Do you ladies know anything about two brands and/or can recommend good brand?  
Thank you :)