Just to add to Fritz's excellent post, Derbys have a rep of being "forgiving". If you were to get hold of a Feather you'd see what a sharp DE blade was. In addition the lack of thickness and body in the DE blade compared to the straight makes quite a difference. I loved shaving with a DE once I learned how to do it correctly with proper preparation.

Once I discovered the wonderful shaves I get from a true straight razor I never again picked up a DE. Take Rayman up on his generous offer and my guess is you'll never look back either.