My ONLY complaint about this bra is that Wacoal stops at an H cup for it. I'm wearing the 34H and the top of the wires in the center front is still about two fingers away from my breastbone - not ideal for a bra, let alone a sports bra, but SO much better than anything else I've tried on. It's even better than the "regular" bras I'd been wearing.

Support - fabulous! good lift and felt good all day
Shape - nice and rounded, kept my breasts from going out to the sides which I hate, keeps them UP, which slims the overall figure!
Bounce - not a lot. I'm not a hard core runner, but I do a brisk speed-type walk regularly which in any other bra has produced a LOT of bounce, to the point of discomfort.
Straps - nice and wide, and for someone like me with a smaller frame, I did not once feel that they were slipping off. Due to the cup size issue I can't criss-cross them in back, which I'd love to do, there's just not enough strap to do this. The back strap is VERY wide, and it's eliminated a lot of the bra line bulge that I had with other bras, especially above the strap toward my arms.
Underwires - on the outside??? I was skeptical at first, but the level of comfort this provides is truly amazing. I wish more bras had a layer of fabric between the skin and the underwires. For the first time in a long time I'm not dying to get the bra off after a few hours!

Overall? This bra is VERY comfortable, though I can't say it's perfect. I'm actually considering getting several of these and wearing them all the time, not just when I exercise.

I would definitely recommend this bra, I gave 4 stars ONLY because the cup sizes stop at H cup.