1) This bra is very comfortable. Even though it lacks underwires, it still provides excellent support.
2) There is usually a very small amount of fabric at the bottom of the cups (very usual for me, no matter what I do), and it is very full coverage, so I can't wear it under certain clothes.
This bra absolutely does not screw around when it comes to a snug band. I would highly recommend sizing up a band size. The cups also seem to run a tiny bit small, but I would give your normal cup volume a shot before sizing up.