Subfascial or under the muscle? (Photo)

You can have excellent outcomes with either subfascial or submuscular placement of your implant. What will matter more is the skill and technique of your surgeon.
The potential issue with submuscular placement is animation deformity, where the implant becomes obvious when you flex your pectoralis major muscle, for example when working out. Submuscular can also result in more pain during your initial post-operative period, though this can be variable. Personally, I favor a subfascial approach unless there is a compelling reason to go submuscular. Looking at your images, I don't see an obvious one.

Hello, I agree that it is often feasible to put subfascial implants closer together than submuscular implants. This is because if there is a large gap between where the pec muscles attach to your chest, the surgeon can't put the implants under the muscle and make them close together without detaching the muscle from your chest wall. Fully releasing the muscle over the implants would negate one of the main benefits of putting the implants under the muscle, which is having a thicker layer of tissue over the implants. The gap between the implants is an important consideration but there are many other advantages and disadvantages of these two pockets, such as different risks of implant rippling, palpability, capsular contracture, animation, etc. All of these issues would be taken into consideration by you and your surgeon before deciding on the best implant pocket for your unique goals and body type.