Everyone here assumes you mean mufflers, not a complete system.
I have an Erion can on my 929. Maybe it's not quite the quality of the Satos that are on my 919, but the difference is very small. Going into it's 3rd season, the Erion still looks new. No rust, no cracks, or failures of any kind. The Erion can hasn't gotten any louder, something I can't say about the Satos. Buy a motorcycle magazine, there are always lots of adds in them reguarding exhausts. Keep looking. If you go Erion on the 919, get the heat shields powdercoated black to match. Good luck, welcome.