Quoted from ForceFlow:I use this:
amazon.com link »
These are really, really nice for the price. I have two on my bench usually. One I abuse and one i keep the blades in good shape. Even the one i abuse holds up. I have a third one in backup, but havent need it for couple years now.
All similar brands (there is another popular brand one whose name escapes me right now, exclite?) I have tried are inferior and didn't last as long.