Medium Plus Profile or High Profile Implants for Breast Reconstruction?

The dimensions and volume of the expander should be your guide. If you and your surgeon are happy with the current width (base diameter) of the expander then that is the diameter of the final implant you should use. Similarly, the implant diameter can be chosen smaller or larger compared to the expander as necessary. The fill volume of the expander should be known which can help you decide which volume of permanent implant you would desire. One caution, for a low height implant, the permanent implant will need to be a little larger than the fill volume of the expander to achieve the same "apparent" size.

In my practice, I limit my breast implant choices to medium plus and high profile implants in most cases. This provides excellent projection of the breasts and limits lateral fullness of the chest wall.
In your particular case, both medium plus and high profile implants would be suitable. The dimensions of the breast that you desire in terms of breast height vs. width dimensions is a matter of personal taste and must be addressed with your surgeon. Your base diameter is an important determinant, as well as your breast proportions. These should be measured and recorded by your surgeon.