154 is an absolute PITA to sharpen!!
I've been working on my MP since I got it and it's STILL only mediocre!!!
Though I don't have proper sharpening tools yet.
I think that I'm gonna get a belt sander. For the price and ability to sharpen any size knife I think that it is a bargain. Not to mention razor sharp at the flick of a switch!!!
I was worried about technique but I think that I will be able to learn quickly.