So I bought 400 Derby's when I was starting a while back ($7 for 100 how could I pass it up?), I havn't even used a entire pack from one of the 100 blade packages. I've learned that I really don't like the blade that much, especially today after going *gasp* 3 days without shaving and had heavy dense growth. Figured why the heck now, revisit Derby. Placed it in my Weber and started to shave... it felt so dull like it had a hard time getting through. I didn't even do a 2nd stroke... threw the blade out and grabbed a dependable Feather Hi-Stainless which was basically effortless. So what would you do with all these blades? I don't know anyone at work who uses a DE razor... or should I save them for daily shaves with less than 24 hours between shaves and definetly not after 3 days.