This is the best nursing bra I have found.  I've tried six others, and this one far outweighs the rest.  It's comfortable, provides decent lift, and has wide enough shoulder straps to support me without peaking out of everything I wear.  It's very easy to use, and unclips easily for nursing/pumping.
It's also very affordable, especially compared to some of the nursing bras I've purchased from baby/maternity stores.  The only drawback for me has been how quickly I go through them.  The company has added a little lace between the main part of the cup and the clip.  This makes it more feminine, but the laces seems to tear or unravel fairly quickly.  I typically nurse or pump 5-6 times a day, and all that clipping and unclipping near the lace was too much for it to handle.  I'm on my fourth bra in about 8 months now.  Yes, that's a lot, but for the price and comfort, it has still been my best bet.