Iv got the striker enforcer variable and 22ah lithium and iv got two blitzes had trouble with the connection on every one of them, I do love the enforcer though, but when they get their technology sorted and the cordless ones up to that standard I'd definitely go cordless just because of the connection issues, you can already get the battery to go cordless on the enforcer but the battery run time is useless so no point in investing in them at all