There’s many other differences as well. The PGM is bigger, the M1 is smaller. M1 is dead smooth too. I never had a PGM though, so I don’t know. If I were you, I would choose M1, because they’re gonna be gone soon, and I got synergy caps, used it for a week, and now, all I use it for is for more weight on a Dark Magic. Metal yoyos don’t dent if you fall on them… depends on how fat you are. If you’re over a ton, I think it’s safe to say the metal will dent. ;D However, if you’re normal, then falling on a yoyo shouldn’t dent it, I fell on my M1 and it’s still there. However, I kind of caught myself as I went… worst thing I can think of is that the axle might bend. I don’t think the yoyo itself will dent.