I think I have 26 different blades. So far I have only used FD Polar and #5 Pegas mg. The reason I have so many is I first bought some Olsen and Pegas mg blades at Woodcraft. It's because that is what they sold. I knew nothing about blades and still don't. Then on SSV the talk was about FD blades so I bought a dozen of everything. I had no idea what I needed. I suspect most will be bequeathed to whom ever get my saws upon my unfortunate demise. I use mostly polar blades because they seem to do everything I want them to. I don't like reverse blades. Too jumpy for this old man. I'll give them a try. I just have to get used to holding the wood down firmly.