I decided to buy a PM2 for BOS because I knew that he'd appreciate it. Although he owns many Spydercos, when I learned that he never experienced the PM2, it gave me an opportunity.
I, too, am late to the PM2 game. I have been EDCing a Scott Cook Lochsa for over six years, and consider the CRK Large Sebenza (of any variety) and Strider SMF to be near-equal substitutes. When I bought my first Spydercos last month, the PM2 rose to the top, in terms of what I expect and appreciate in a folding knife. I honestly couldn't find any faults with it. The best to characterize my feeling of its compression lock is that it didn't look that good on paper, but upon inspecting and manipulating it hands-on, I came to appreciate its simplicity and strength. In other words, I love the PM2.
Anyway, enjoy the PM2!