i had the choice of 460 and 525. i had 525 and ended up being a 34g. i was 34b before i had them done. Ill be honest with u cos i was in agony for about six weeks after my op but my surgeon told me it was cos i had such a big implant. I am pleased with them. My sister had a 380 implant and had no pain what so ever with them. I had relly bad back ache for weeks after the op but im ok now x x