18/21 or 21/21 at higher level. The 49 cut is pretty deadly with just 6 PS. The percentual improvements on attack duration and damage from wpf mean that a Flamberge actually benefits a lot from WM compared to other weapons. Getting 7 WM makes the weapon a lot faster. Its high weight and length take its toll on your movement speed so you need good athlethics to compensate. That is on EU though, perhaps 21/18 makes you fast enough on NA.
