Although the non stick is incredible, the actual tin leaks, half my sponge cake batter ended up in my oven. The same recipe was used in an Al Cheapo springform which didn't leak. It is advised to use this tin for cheesecake and not sponge batters. Also, it's difficult to clean between the crevices, a toothpick does the trick.
I would not recommend this product to a friend.