I have 3 macoms and 1 m&s high impact sports bra. Personally I prefer the macom, you don’t need to worry about whether it will fit you as it stretches to fit, which will save you money as you won’t need to keep buying different sized bras as you heal.
1 of the macoms I bought second hand had clearly been put through the washing machine (you’re supposed to hand wash only). I couldn’t wear that particular one in the beginning as it didn’t give me any support. I also was given a brand new macom sleeping bra, but even though it was a medium it really dug into me and I found I couldn’t wear it. My favourite so far has been the macom signature bra, I’m over 3 months post op and wear it to bed every night. I do wish that for the beginning stage of my recovery I had bought the i-bra, as that would have been even more supportive for my fairly big implants (450 & 500cc) x