I have to say before I bought my PM2 I wasn't very interested in Spyderco knives, however that changed once I got my PM2. The price versus quality of materials = great value. The PM2 works as an EDC, Tactical and survival knife. It might not be the best in each category but it scores highly enough in each, for me, to be one of the best all round knives on the market.
I use mine mostly for EDC, opening packages and regular cutting tasks around the home (it's a great slicer). I have large hands and the longer handle feels good in my hand, very secure grip. The compression lock is very solid, it has never failed me and I believe it is one of the strongest locking mechanisms on the market. The blade steel (s30v in my case) holds a good edge and when new came so sharp if you touched your skin it would cut without pressure. As for deployment, I believe this knife has about 6/7 different ways to open, which I don't think you can say about any other knife.
I do find the compression lock is a bit "tricky" to operate and the blade steel can be hard to sharpen but for me my PM2 is still number 1. It's the knife I compare other knives to. I bought a Delica a few months back to compliment my PM2, and I have to say I don't feel the same about it as I do the PM2. The PM2 is such a great knife and they deserve to be used and not put away in a drawer, I wish I had the funds to buy another one.