I replaced mine recently after trashing it with a cheep clarks chain which stretched beyond the point it would sit on the sprockets in 5 rides.
I was told that the KMC chains are wayyyy longer lasting than PC1, and there’s a lot of SSers in the club.
I was also told to avoid 1/8″ unless youre running BMX sprockets and chainrings as they’re too wide and dont sit straight on the chainrings. someone in the club apparently had one jump off repeatedly as a result (I tried it out and there’s quite a lot fo ‘play’ in those chains on normal sprockets!) so I went back and bought a 2nd new chain. Everyone now used Z610’s on propper 3/32 sprockets like groove armada (not the thin pressed steel ones).