I'm still a noob at head shaving...but I went with the Head Blade Sport right out of the gate and I absolutely love it. I shave with the grain on the top and back of my head, and on the sides of my head I go sideways, so like from my temples towards the backside of my head. My sides are smooth as glass, and the back and top of my head are pretty close to glass smooth, I assume its because I am going with the grain on those areas. But so far, no complaints with the Head Blade. I do want to check out the Sensor blades though, as so far I have only used whatever blade comes with it.