Picture Post: After nearly five years of service, the time came to retire my Sony 1000XM1s today. I once said they were the last headphones you’d ever need to buy, and if it weren’t for the cracking problem they became notorious for (and the reason I’m replacing mine with the M4), I’d still stand by that statement today. Unfortunately, the cracking on mine has reached the point where the entire right side is ready to fall off.