I've come to like yorker caps for my paints. They don't have the crevices for paint to collect and dry in that the screw caps have. Screw caps are convenient, but in my experience messy. I filter outside the bottle rather than by putting mesh under the cap.
Wrap your hose 1 or 2 turns around your forearm instead of just letting it hang. this'll keep it under control away from your work without having to use your other hand, and will act as a pseudo lanyard in the even of a dropped brush. I also recommend switching to the thin black poly hoses if you're currently using a braided hose.
With the SOTAR in particular, I recommend removing the (un)ergonomic plastic grip piece, and connecting the hose directly to the brush without any quick-connects or valves or filters in between. With a thin poly hose connected directly to the brush and wrapped around your forearm, the SOTAR feels and maneuvers much more like a pen. This pen-like handling is one of the main reasons I like the SOTAR, and would be hesitant to trade up to a Micron even if I could afford one.
I actually have two different hoses: a
Badger poly hose which I use with my SOTAR (note the tiny Badger-sized fitting, which makes for a much more streamlined connection with the SOTAR), and an
Iwata poly hose I use with everything else.