I have the Iconic Parts spacers on my 2016. I wish I'd known there was an alternative product stateside.
The spacers are the best aero upgrade you can make to the bike, IMO. I found the stock setup to be intolerable and a medium CalSci screen was only a little better. The stock windscreen with spacers is actually pretty good although I prefer the CalSci screen with spacers. The vent in the CalSci screen doesn't seem to be necessary anymore and I currently have it covered up with packing tape.
2016 MTS 1200 S, 2001 M900sie, 1985 BMW R80 "S" (for sale)
2004 Aprilia Futura (RIP), 2003 MTS 1000 (sold), 2006 zx6r (sold)