I'm the guy on P-F that had the plating issue on the 43. My training 19 Gen5 did the same thing at the same round count (~4100).
Glock would not pay shipping, so I sent the parts to Robar for NP3.
Cool that the M&P beat Glock and CZ. I transitioned from Sig TDA to Glock about the time the 2.0 came out. I went Glock because the size of the 19 is better for me and the 43 goes well with it. I started with a 43 and a Gen4 19 and never could get it (the 19) to run right, traded it off for the Gen5 and was super happy with it for 2 1/2 months until the trigger went South.
If there had been an M&P 2.0C and Shield 2.0 last year I wouldn't own a Glock right now.