i suppose that the answer to this question is the same as the question "which is the best knife?", the answer being the one you have with you when you need it.
its all well and good having a proedge 2million and 1, complete with an attacment for sharpening a house brick, but if you don't have it tucked away in your ruck sack when you need to sharpen you knife, its not a lot of good to you is it?
answer to this i think is, have more than one stone/sharpening device, and know how best to use them all, that way, when you need to sharpen something you can, no matter what.
my that was a long reply :shock: