Bash/Kick & Stun

[Caryatis]

My rule of thumb on when to use the bonus system is if there would be a spell based application as well. Off the top of my head I can't really think of a spell that raises the bash-stun level or chance so I think GetAA would be the preferred method to use here.

Just to back pfyon up, players regain concentration as well and that only happens if you move alittle or get melee'd but a stun is a complete interrupt(unless you have persistent casting AA).