This. The KMW is much better than the Alpha-Bravo that sells for aprox. 1/2 as much.
As for the Harris knock offs-I've ended up with several through trades and package deals. Even the ones that look almost exactly like the Harris (you'd think there could be no difference) are not nearly as good. Anything will work if you only use it occasionally but if you need a product that keeps working through hard use then Harris is just a no brainer.
