When comparing Philips Norelco S9311/84 vs Philips Norelco S9721/84, the Slant community recommends Philips Norelco S9721/84 for most people. In the question“What are the best electric razors?” Philips Norelco S9721/84 is ranked 9th while Philips Norelco S9311/84 is ranked 25th. The most important reason people chose Philips Norelco S9721/84 is:
You'll not have to spend a lot of time cleaning the shaver's cutters because the S9721/84 comes with an automatic cleaning station.
Specs
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Pros
Pro Causes less skin irritation
This shaver doesn't irritate the facial skin as much as the other, equally-priced shavers thanks to its rotary design that prevents the blades from getting too close to the skin.
Pro Can be used with foam or gel
Neither the shaving gel nor the shaving foam can clog up the cutters of this electric shaver.
Pro Can be used in shower
Thanks to its waterproof design, you can use this shaver in the shower.
Pro Cleaning is simple
You'll not have to spend a lot of time cleaning the shaver's cutters because the S9721/84 comes with an automatic cleaning station.
Pro Good for sensitive skin
This electric shaver is ideal for those with sensitive skin because its rotary design prevents the cutters from getting too close to the skin. In general, the rotary shavers are known to be good foil shaver alternatives for people with sensitive skin.
Cons
Con Not quite maneuverable
Compared to the foil shavers available in its price range, the S9311/84 doesn't offer the best maneuverability. Therefore it might be complicated for the shaver to reach certain zones on your face, especially in the neck area.
Con Expensive consumables
Replacing the shaver's head will cost you a pretty penny since. On average those heads cost around 50 dollars.