So, I admit to being cheap.  I usually buy bras at a big chain store for $10-15.  I have about 15 of them, and I choose one for the day based on how low I want the girls to hang, or how many times I want to pull up my straps.  I finally decided to buy myself a "nice, grown up bra", for 12-hour shifts, not necessarily sports!  I just want to say, WOW, this is the best bra I have ever had.  My usual 42D wasn't available, so I bought 40D.  Apparently I need a DD, because I do have a little bit of the uniboob affect and some overflow.  And the 40, while a little tight, is still comfortable.  There is no bounce, and I have not pulled up a strap ONCE.  Again, I am not wearing it for sports, just daily wear.  I can't even tell it has underwires, very very comfortable!!