The extreme sports bra that zips up at the front from M&S is really good and so far my fave since po BA
It give great support, is super comfy and has a decent neckline that you can still wear some low cut stuff without it showing to badly compared to some others I’ve tried where they have still been good but I found at times restrictive with some of my clothes.
The link is in another chat relating to bras but I’d recommend that one by far! The material is fine to wear post op x