I'm currently doing very well using Personna Reds and my EJ DE-87. They are very comfortable and forgiving and provide a good shave, but my beard is coarse in certain areas and I usually have to do several passes to cut through those areas. I'm looking for a blade that is a little sharper than the Reds that will cut through the coarse whiskers with less effort. I've tried Derbys and don't particularly like them, and my face is easily irritated so I don't think I want to try Feathers. What would be a good blade to move on to?