I used a new Feather loaded in my black handled Super Speed this morning along with my Simpson Rover Best, DR Harris Windsor and followed by vintage Avon Deep Woods. The Feather was very sharp, gave me a very close shave but also created a little irritation and one weeper. The irritation was most likely caused by the over use of pressure as I just got through using a Polsilver Super Iridium which is much more forgiving of improper technique. There is no lingering burn or redness, just a little extra sting when applying my aftershave. Looking forward to giving it another go tomorrow in my Merkur HD.