I have both. My SF mini carbon locks every time. The KAC has carbon locked before but its been forever since its happened.
I cant really tell you about the tone difference. The SF is personally owned and gets shot at an indoor range on a 16” gun. The KAC is issued and gets shot outside on an 11.5. It definitely sounds good though.
I think they’re both great cans but If its one or the other Id probably go with the KAC. Also no experience with the MAMS. We use the flash hider.