I guess I am just behind the times. I still use a Makita Tek gun for screws, drywall, and for the killer driver app: deck screws. It is variable torque, variable speed (up to 2500, not 4000 like drywall drivers), and variable depth.
I can set the torque so that I don't twist off gummy stainless steel deck screws, or mung their heads.
Yep, I get the advantages of having some impact, but this thing is simple, and has lasted for probably a million or more screws. I wish I could get one like it, with a battery...and maybe soft impact.
So the question is, when will manufactures offer detachable snouts for variable depth?
When will manufacturers offer variable torque (which in this case Milwaukee has, in an uncalibrated fashion)?