i have had a remington 870 express for 11 years now, it has never failed to go bang when i pulled the trigger other than when i was using some bad reloads my friend made up and ive put nearly 10,000 rounds through it in that time. my brother had a mossberg 500 and when he went to basic training i took it out to give it a try shooting trap. long story short i nearly threw it under my truck and ran it over after one round, it felt cheap and poorly made and i couldnt get used to where the safety was positioned on top of the receiver.
everyone who i hunt with has an 870, several are wingmasters that were bought over 30 years ago and they are all amazing guns, there hasnt been a single issue with any of them other than when my friend thought he was a gunsmith and tried his hand at engraving, purely a cosmetic issue after that.
Remington 870 express 12gauge
Remington 597 LS HB .22lr
Remington 721 30.06