Just OK
I use a Norelco 9000 series from Costco.  When I replaced the blades I noticed that my razor made noises like the blades were moving side to side, like it didn't fit snug enough or were made slightly smaller in diameter from the original blades I took out of my shaver.  The blades did not seem that sharp either.  I have since purchased some other blades (for a lot more money) and now my razor blades cut better and no longer make any noise.  I will be spending more money in the future to get a better fitting and sharper blade.
Rating: 3 stars