Personally I would tend to stick to the manufacturer's toner. I acquired a nearly new Dell colour laser printer because it was making a loud grinding noise, and the person did not want to get it repaired.
Turns out the problem is almost certainly the non-Dell magenta cartridge.
Thing is, it is $70 for magenta from Dell. One day I might get around to it, but need black too, so $140.
Or just buy another new printer with the factory toner and dispose of the old one - with careful selection this could turn out to be cheaper.