I just got them today and so far they hit harder than My MNKEs, VTC3 and VTC4 I have. It is not a night and day difference but it is a nice step up and I needed two new batteries. The mod I am testing it on is my LP SL Reo Grand. You can read more about it by clicking here. I am running a .2 ohm set up. It is far into sub ohm territory and these batteries are not getting hot from use at all.