I am a total shaft addict (no sexual innuendos intended), but I TOTALLY think buying the shaft M1 is POINTLESS. It's like planning on slitting someone's throat, and picking a knife that can kill someone just fine, then sharpening the heck out of it. It will still do the job just fine as it is, but you're wasting money on sharpening it pointlessly. All others are good; I bought the firebird M1 and it is considerably better.