Greetings all. In my opinion, of the weapons you mention, I would choose the Browning HP as the "best" overall. The P210 will best it in intrinsic accuracy, parts availability, and pure craftsmanship, but has other things to hold it back: price, component availability, and slow to reload as it not only has a butt-release magazine, but the magazine must be withdrawn by hand. The P7M8 is a fine choice for self-defense, but the use of cast or lead bullets is out due to its gas piston system. It remains one of the most reliable weapons I've ever used and have relied on a P7(PSP) as a house gun in the past. Both the HP and the P210 will handle lead or cast bullets even though, in my experience, jacketed bullets are generally more accurate in 9mm. One choice you did not mention was the CZ 75. This allows for DA or SA use due to its design. I own all three weapons you mention (if you substitute P7(PSP) for the P7M8) and think that all of them are fine, but still pick the HP over the other two if that was the only one I could have. Current MkIIIs have decent sights and safeties and are quite accurate and reliable out of the box. Best to all.