Am relatively new to wet shaving (12 months). I bought a DE starter kit which comprised of a synthetic brush, EJ DE89 and a sample pack of blades. Was ok but wasn’t getting the shave I wanted. Discovered adjustables and now have a FB, Slim and 2 Black Beauties. Question is which one to keep. One has a metal base plate ‘69, while the other has a plastic base plate ‘80 I think. Which Black Beauty would you keep ?