You've narrowed it down to three great knives. I like the compression lock on the PM2 more than the liner locks. If you keep the Blur and 0350 assisted-open, though, the risk of accidentally swinging the blade down on your thumb is pretty minimal, as the torsion bar will stop the blade at about 90 degrees. The compression lock doesn't lend itself well to a controlled one-handed closing though, if that matters to you. Basically, you disengage the lock, swing the knife handle, and let the momentum swing the blade shut (not unlike waving an Axis Lock knife closed). All 3 are pretty grippy - G10 on the PM2 and 0350, and TracTec on the Blur.
I just got the PM2 pretty recently myself, whereas I've had the Blur and 0350 a bit longer. I'm very impressed with the PM2. It's blade is actually the same thickness as the ZT 0300 and 0550 (not sure about the 0560... don't have one... yet), and the FFG profile makes it a fantastic slicer. It's about the same weight as the Blur. The liners on the PM2 are pretty thin though, so you don't quite have that tank-like feel you get with the ZT.
The Blur is a great EDC blade. It's relatively compact, and gives you a lot of knife to work with. The 0350 feels kind of like a beefed up Blur (wider and thicker handles and blade, heavier, bulkier). While it does feel more tank-like (if you want a real tank, look at the ZT 0300 series), it is also a bit more cumbersome for EDC due to it being bigger and heavier. The PM2 is about the same weight as the Blur, but it does take up a lot of pocket space on account of its longer handles and wider overall body when closed (due to the thumb hole vs. stud).
Couple of side-by-sides of those three:
