Just started using my SuperSpeed; first DE in over 25 years!! First three shaves were with a Derby I was PIFed. Tossed it just because I wanted to try more of my samples; blade had worked well. Put in a Feather hi-stainless. Have used that for three shaves; worked probably better than the Derby. Now I have RBAD!!! Want to order more Feathers! Except I have a sample packs of Derbys, Iridiums, 7 O"clock Yellows and Feathers left! And I want to start using my newly acquired Tech in the morning with ??? in it!!! Don't know what will work well with it!!! I hope I can get a grip on my "need" to order something long enough to get through the samples!!!