Good choice. I cannot wait for my green, cts-204p sprint to come out!
The only reason I would say get something different now is because you will eventually get a PM2 no matter what (I ended up getting into CRKs and customs before I got my first PM2 but I still got one, and it's the only modern folder I consider worthy of rotating with the 'zaan) and you can wait for the next sprint run and not have two of the same pattern.
Benchmades are nice, everything about benchmade is good but nothing is great or that special in my opinion. Spyderco sprint-runs of the PM2 (and all their sprints) are special and some of them great!
The Ritter griptilians are special, but I hate the grip' platform. The mini-grip is too small, impossible to flip without a lanyard, and the pocket clip interferes with ergonomics; the full-size grip has cheap-feeling hollow plastic scales, the weight and balance are off, the 710/AFCK is better in every way.