I had a Mission MPF 1, all titanium knife, and it was an excellent knife, that I loved. I sold it because I had the opportunity to get one of MY Holy Grail of knives knives!! The titanium that Mission uses DOES hold an edge quite well. Mission knives has their own forum on KF, if you are interested. And John M who runs it, is there and would happily answer your questions. Would I get an MPF again? Absolutely!! I would like an MPF 3, which has a shorter blade that the MPF 1 that I had.