I bought this bra a few weeks ago, when still under the illusion that this European 75E (it's a UK 34DD, I wear a 32G now in normal bras) was my size. When fitting this bra I knew it was too small, as it squishes my boobs together into one giant monoboob and I really have to stuff my boobs in with force. I also tried on a 75F in the store, and even that did not fully separate my breasts (as I think it is designed to do).
However... in the 34DD my boobs DO NOT MOVE. Like at all. Not a bounce, not even when doing ...jumping jacks!
That is pretty much what I am looking for in a sports bra, so I bought the way too small 34DD anyway. I'd say the band is a true 34 for once, quite snug and comparable or even snugger than many Freya 32 bands. I wear it with the straps cris crossed, which increases the supportiveness tenfold.
I own another, even smaller one of these (a 34D) that I've used heavily for two years (running), and even that one is still quite supportive. In all, I think these are great heavy duty sports bras.
One thing: on my old one I would love to tighten the criss crossed straps by now, but I find that when I do this they slide back very quickly.
This is what I use as a sports bra, though it is 3+ cups sizes too small for me! It is quite painful when I first put it on, but I get used to it when I'm working out. It has a ridiculously tight band for a 28, may even been a 26. The tag says it is a UK 28D, which is equivalent to a US 28C! Ouch https://d28qt14g3opchh.cloudfront.net/smileys/icon_surprised.gif" alt=":O" /> Lol I usually wear a 28F or 28FF. But for the amount of squashing going on, it does reduce the amount of bounce from crazy to absolutely nothing, but makes me look like the chest I had when I was 12! I should really try a bigger cup size in this, maybe even a 30 band size too.
Bought on uk eBay a few years ago for under $10, retails online for $80+!