The only open comb I have experience with is the PAA Ascension Select double open comb. I find it a bit agressive but not terribly so and get good shaves with it even though I have sensitive skin. I don't use it every day and tend to use it when I have a few days growth. I also find it difficult to do the under the nose area so I have to be careful with it there. It's partly because the tines poke my nose so i don't go against the grain in that area like I would with a closed comb.