I'm not buying a bunch of cartridges. I like the headblade a lot, I really do...but it drives me crazy that I can't get the sides of my head very well. Maybe I should chop off my ears so I can actually go UP the sides of my head.
I hear ya, and what I did is bought a Sensor Excel handle (they are still around). That way I still buy just one cartridge (the Sensor 3, I prefer) and it works out great.
As hard as I try to use just the HeadBlade, I can't get a perfect all around shave without using a good old regular handled razor.
Because I'm not about to turn the blade around, like they say to do, every time I shave.