I may have to give the Gamechanger OC a shot. Currently the GC .84 is the only DE I'm using. I also use three SE razors: RR Hawk, Gem MMOC and Suppy Injector. The GC provides a good shave and it's a pleasure to use, but my SE's shave a bit closer with the same daily 2 pass shave. If the OC shaves just a bit closer, it would be a real winner for me.
Are you saying that the RR Hawk is more efficient than the GC .84?