Has anyone else tried the Black Heart tips? They are black layered tips. I have tried one of the M tips for a couple of weeks now. I would put the hit similar to Kamui. It mushroomed just a little, but not a lot. The hit actually seems to be improving slightly as it is getting harder. I have not decided if I want to add another Brand tip to our line or not, so I just thought I would get others input on them.