After I switched from brown to Philips 20 years ago, should be my "New" again a Philips. By Li battery, it is considerably lighter than the model that I had before. The battery can also be exchanged quite unproblematic when needed. I always take the device in the middle price field. The inexpensive models have "poorer" shaving heads. So the Comfort Cut, Dual Precision and Super Lift and Cut are not the real McCoy.
Triple track or Ultra Track shaving heads should have the part already.