I've been on Mako IIs for about a year, skating 4+ times per week (sometimes 7+) with no manufacturer defect. I had Mako Is for over a year before that and had them warrantied. I can't imagine trying to go back to Supremes, which I came from. I've put them on a couple times and tried to skate in them just to see and went straight back to the locker room and changed back. I have Supremes converted to inlines and can't skate in them. Now that I've been in Makos for over two years, I'm spoiled and can't imagine going back to a more traditional boot. The only gripe I have with them is that shots hurt. I've hesitated to put my son in them, because he's a defenseman and blocks a lot of shots and I don't want him breaking a foot. For me though, I can step out of the way in beer league or drop in. Still, the ones I don't get out of the way of hurt.