I started out using a Mach 3, because I didn't know about the Headblade. When I found out about it, it was a gift from above!
Sure, there is a small learning curve, but when you get it down, it is so much easier than using a regular blade. Talk about having to know about applying pressure? You never know how hard or soft to push using a regular razor. At least with the headblade, the center of gravity is much smaller so you can tell the pressure (don't use much at all!)
I know whip out a fresh shave in less than 3 minutes (shower shaver here!) beautiful, and gives you those extra few minutes of precious sleep in the morning!