i will say that a cartridge razor is faster. you can do the face and dome in less than 5 minutes. but they they keep bullshiting, 2 blades, 3, then 4, then 5, then 5 with a battery. hell it's 6 if you count that trimming blade. too fucking expensive.I shave my dome and face. I have pretty thick hair, been using the cheap cartridge razors and shave gel since I was 14.
with the DE, it takes a bit more time and you have to learn the technique. but i've noticed that my skin doesn't feel like it got ass raped any more. also, as the beard grow back, it's more uniform, so it looks better as it comes back in.
DE for life.