Will you or a friend be installing them? If so they're likely fine since we're not seeing posts complaining about bad gear quality. But if you're going to have a shop install them, have the shop provide ALL of the gears and parts needed and have them use the brand of gears they prefer. The reason is simple... if a shop installs everything and uses their preferred parts they provided, their warranty will cover everything no questions asked or post-install problems.
But if you provide any of the parts they install, that gives them an 'out' if something goes wrong during or after the installation. And you know they'd blame the parts you provided and not their installer. And make no mistake, problems with gears are usually always caused by the installer, not by the parts themselves.