Great cables, not too hard to fit, if you follow the instrucions closely. I’ve used them for years, you can ride through any mud and water and know the gears will work. I’ve never worn any out, sometimes you need new ones if you fit a new mech, or if a stone cuts tehm againt the down tube. Don’t bother using them on front mech though, it’s not worth it, they nver go wrong through stick cables.
Avoid Avid Flakjackets, these are only semi sealed (read ‘not sealed at all’), let water in, but it can’t get out, the cable then corrodes.