Honestly, this is a whole next level on getting people to mask properly. Some masks are just not going to work and it's really an individual thing. I've found a couple N95's that I like, but it took some trial and error. The DemeTECH's seem to work well and fit well for me.
I'm with you on some KF94's. I, personally, have used the LG Airwash as one mask in our arsenal for a long time and found it to be an excellent mask.
@BE @mamashizi I don't entirely trust the Good Manner KF on my nose, but it is very easy to breathe in, while being tested as 99.8% filtration.
My current default mask is 3M Aura 9211, tight straps and exhalation valve.