I replied to this thread but am not sure if it was submitted correctly.
In brief (will try) I recommend an Edwin Jagger double edge. This is a very well made DE and is not adjustable. Still, I've had great success with this with no nicks. My price was $39.95. Using it has taught me to recognize the direction of my beard growth. I started with Bolzano and then tried Feather DE blades. Both are excellent blades and reasonable in price. DE's are much better than the Fusion types. It just takes a light and accurate touch. Good results obtained WTG, XTG, and ATG. Would recommend a DE for head shaving though some may disagree. It would seem that shaving blind with it on your head would be less prone to misshaps.
I'm still a newbie but had my first SR shave today that is comparable to my DE and didn't need a DE final touchup. So I feel like I graduated. I hope this helps.
Phil