If you aren’t looking for the closest possible shave, I can’t say enough good things about the Philips Norelco OneBlade. While the replacement heads run about $

If you aren’t looking for the closest possible shave, I can’t say enough good things about the Philips Norelco OneBlade. While the replacement heads run about $15 each, in my experience they do in fact last ~4 months as the manufacturer says.