I' ve used Zwickeys for quite a few years and like them very well. Probably the biggest complaint I' ve heard about them over the years is that people have difficulty getting them sharp. I made a sharpener from a 2x4, similar to the tru-angle, using diamond stones. The difference in my homemade sharpener is that the middle groove between the stones is deeper. This allow the main blade room to pass while sharpening the bleeder blades.

The past several years I' ve been using Ribtek broadheads. They fly great, seem to be reasonably strong and are much easier to sharpen, plus seem to hold an edge better. All that, plus the fact that they are substantually cheaper.