Looks wise partials/unders are more natural. If you haven’t much tissue overs can look extremely fake. Usually if your skin is poor quality and you have little breast tissue your surgeon insists you have partials.
Recovery is suppose to more painful with partials but I breezed through mine.
With my partials I can wear push up bra and get the fake round look. It’s all down to personal choice and what you already have to what the surgeon will offer x