I use my '60 SS TTO for all but maybe my under the nose area, the Sensor XL is simply easier, but with practice just the DE most of the time. The XL gets used, though...my wife is afraid of the DE so uses the XL for her legs.
I use an old Sensor to shave the inside of my nose. Seriously! Gillette's two blade cartridge razors are the best nose hair trimmers ever created. That's what they're good for.
The three, four and five blade cartridges are more like mops and unsuitable for this important purpose (unless your name is Jimmy Durante).