I had tried about 6 different blades in my 2 razors. (a DE89Lbl and a 1960 Gillette Superspeed). I found the feather to be a little too aggressive and ended up settling on Lab Blues as they shaved close with little irritation. The other day I got a RazoRock TTO and have used it for 3 days. I had read that it is a more aggressive razor and that is true. I have some mild irritation and have even gotten a couple of minor nicks. Do any of you guys use a milder blade on some razors and a sharper on on others? I was thinking of trying the Derby's in this razor and work my way up to something in-between the Lab's and Derby. BTW other than that it is a good $20 razor. Heavy and solid with OK finish.