Should I choose Motiva Ergonomix 215 cc demi/medium profile, or 205 cc mini/low profile?

I Iwould recommend using implants from one of the two largest implant makers in the United States, allergan or mentor.   if you need warranty replacement in the future it is much more likely that these companies will still be in business.

Motiva implants come in 3 profiles and 2 gel viscosities. I'd suggest the Mini profile with the Ergonomix gel which gives a natural shape. You should be fine with the 205cc volume.

It sounds like you have a clear vision for the subtle changes you want to achieve with your breast augmentation. Here are some key considerations regarding your choice of implant size and profile:
Understanding Implant Profiles: Low profile implants tend to have a wider base and less projection compared to medium or demi profiles. If you prefer a rounder shape with a fuller lower pole and a subtler enhancement, the 205 cc low profile implants may align better with your aesthetic goals.
Sizing Considerations: The difference between 205 cc and 215 cc implants may not be as significant as it seems. However, the profile plays a crucial role in how the implants sit on your chest and how they affect your overall silhouette. If you feel that the 215 cc medium profile implants appeared too projecting in the 3D simulations, it’s worth exploring the 205 cc low profile option.
Consulting with Your Surgeon: Your plastic surgeon’s experience is invaluable. While they may rarely use low profile implants, discussing your specific goals with them can help ensure that you make a choice that aligns with your preferences. Ask for a thorough explanation of why they believe low profile might be too flat and how that relates to your body type and desired outcome.
Visualizing Outcomes: If possible, request additional simulations or try on sizers in the office to get a better sense of how the different implants will look on your frame. This can provide a more accurate visual representation of what to expect.
Patient Experience: Remember that many factors contribute to the final outcome, including your natural breast tissue, skin elasticity, and overall body proportions. Take your time to weigh your options, and trust your instincts about what feels right for you.
Ultimately, the choice between 205 cc low profile and 215 cc medium/demi profile should reflect your aesthetic goals and comfort level. Open communication with your surgeon is key to achieving the results you desire.