I have been looking at getting this done myself. There are lots of choices. Under the muscle is meant to look more natural but I have also heard that over time these are more likely to shift.

You also have two choices in shape, round or tear shape. I'm guessing the tear shape give a more natural look.

The other choice is whether you get saline or gell. I know that there is a lot of scare about silicon but the gell they use now is different. the saline ones are more likely to leak and give you that ridge look as the gell moulds to your body more naturally.

Get a referral fron your dr to a good surgeon and he will answer many of these questions. It is good though to get advise here to know what questions you want to ask.

Good luck
tt