Just started my 5k spring training and ordered this bra since my previous sports bra purchase was not great. I'm a natural 36 G (sometimes H, depending on the brand) so I need some really good support and/or compression while I run. The bra is nice and tight fitting, like you'd want in a sports bra. My breasts were lifted and VERY well supported. Not a lot of compression. I don't remember my breasts moving at all while I ran, not even bouncing a bit. Of course, that may be because it was the first run of the season and I was trying not to die and not really paying attention to my chest. :)

There is a small part of the bra that rubbed and irritated under my arm when I first put it on; I didn't notice it at all while I was running. If it bugs me again, I think I may just have to adjust the straps a bit.

The only thing I really wanted to deduct a star for was the hideousness of this bra. ha. But I wasn't buying it for style, so 5 stars it receives. So overall I'm really loving it. 5 stars for function and price, 1 for style. I will probably order another to extend the life of this bra.