This is the first time I have bought a Shock Absorber Sports Bra.  I am not large busted, 36/38 B, nonetheless support is needed no matter what size a person is.  First off, the product is WELL made.  This is not your typical off the rack type piece.  I was hesitant at first since my sports bra purchases in the past have been compression bras in the $20-25 range, so I really sprung for this one.  I'm really happy I did buy this!
It was a bit tough getting it on at first.  The bottom hooks behind like a normal bra and it's tight, I would go one size larger on the band.  The top 'latch/hook' took a bit of fumbling.  Just think back to when you first learned to do a ponytail, it's similar to that.
Once everything was hooked, the bra felt secure and solid.  I've jumped up and down and the motion was minimal, much better than a compression bra.  The big difference is when that top latch is hooked.  You feel the immediate cinching of the bra, it feels nice in a sense.  I will caution that it's closer to the neck than any other sports bra I have owned so it was a uncomfortable at first.
Overall a very solid sports bra and I will buy another.