In my opinion this type is far superior to bearing buddies.......with this system you do this once a year and you are actually removing the old grease and re packing your bearings with new grease. Only thing is....keep a watch on the back side of your wheels.....when the grease seals get worn they will sling some grease out on the back side. What I do is I just replace the seals every three years, that way I know I am in good shape. Be sure to use a good quality lithium based marine wheel bearing grease.