My cousin has had an original Mag-10 Ithaca since their first year of production, and it's still running well. He took a few years off goose hunting, but has used it for turkeys in place of waterfowling. He's had no issues that I'm aware of.
From what I can gather, the Remington is just a revamped Mag-10, so it should run well, also.
I've shot the Ithaca a bit, it doesn't kick so much as push, you just kinda roll back with it. Gawd, it was awkward, though, like trying to swing an I-beam. Huge gun.
