I second the Target bras-- that one is my "go to" bra, since it is soft and comfy and looks like a tank top when worn under a button-up henley. My nighttime nursing bra is from Kohls, and it has the sort of cups that just move over to the side, with no snaps or clasps anywhere, not even on the back band. My two "nice"/daytime bras are from Bravado, but i'm not that impressed. They're just not as comfortable. The one that pulls over the head and should be soft and comfy is not soft and comfy-- the fabric (leopard print) is kinda stiff and thick and doesn't seem to breathe. The new soft cup one was sized a little small and doesn't shape very well, plus I find the clasps annoying. I like snaps better.
In any case, I'd go with Target and Kohls, since I got each of those for $12 and wear them every single day, whereas the $35 Bravado ones I only wear when I'm out of laundry or I need a plunging neckline or for going out in public. Good luck!