I usually try each razor I purchase shortly after arrival, but I have noticed a handful of razors I have never used. Some because they are duplicates (Fatboy, Slim, Red Tip, Tech, 20's and 30's Gillette's, Gems), a couple due to lack of proprietary blades available, and others I'm not sure why. I've been telling myself to try my (user grade) Aristocrat for a while and still haven't (maybe this will make me do it) My desire, lately, has been to use my Merkur Progress or 39c which both provide great shaves. Something about the twisting (39c) or bending of the blade (Progress) that makes the blade rigidity awesome for shaving. So the question arises: What Safety Razors in Your Collection have not been used yet and why???​Thanks.