I own this bra in all three colors, and it's my go-to for most daily occasions.  I'm a 36D and I found the medium fit me well.  The clasps are easy to maneuver, but (as others have found) the frame in the middle DOES rise above the center creating an irritating T above the center line.  I'm guessing if you're smaller-chested this wouldn't be an issue since the cup fabric wouldn't be pulled away as much, but I just use a safety pin in the center and it works for me.  I also tried cutting the center frame out out one of them, thinking it did nothing for support--and it bra still fits well, but the strap will twist around when unhooked and make it difficult to snap back on (so...don't do that).  Washes well and provides enough support that I wear it in public, but I'm not planning on wearing it under dress shirts when I'm back to work.  It was comfy enough to wear when I was first starting BFing and still does the trick nearly 5 months later.