I decided to buy 20 Polish-made Sensor blades for $17.35 on eBay. I broke out my only remaining original Sensor handle and took it for a drive this morning for the first time in 3 years, as my Badger & Blade handle name suggests. Effortless BBS with one pass and touch-ups.
My improved technique from the SE and DE shaving contributed to such a nice result. The Sensor will go back into rotation and come up every 13 days...Can't be a hater of a system that performs so well, though the refills are about a dollar each.
Mach 3 Turbo, 2nd shave, barley DFS, noticeable stubble under chin. No matter the lather, prep, technique or version of their cart, can not get a decent BBS with this razor. All the Atra, Sensor, and Fusion carts can give a BBS, as well as most of my DE razors, just can't find a way with the Mach 3.