I like the firm support of this garment (I'm a 36C).  It is comfortable throughout my run.  I have three small irks with it, though:
1.  It's not at all adjustable (although I don't need to adjust, but others might).
2.  With no back closure, it's a bit tough to peel off a sweaty body.
3.  The seams at the shoulders chafe after a while - that is, if I do not take it off for several hours.  So, I just take it off right after my run (see irk #2).

Overall, I would recommend this bra for its comfort and support.