Currently I have 375cc ultra high profile implant on the left side and 400cc on the right. I am going back in an am going to increase size. My Dr. and I talked about 550 cc, however, Mentor does not off a 25cc difference in that size range. I of course want to be symmetrical, but don't want to sacrifice size. My Dr. suggested doing 550 in both. I am just concerned that one side may be slightly larger.