I use quality car detailing microfiber cloths for my gear (Autogeek has nice ones). They actually trap the dust, while a brush simply kicks it up into the air only to fall back down on your gear. The same can be said for compressed air. This is the same reason you don't blow off a car before painting it. The dust will land right back down on top of the wet paint. I do like the brush idea for getting into places where you can't get a microfiber, but I have not yet found a place that those little fibers can't reach.
Makeup brushes for Christmas
My wife gets me! I opened up one of the gifts from my wife and wadddya know, makeup brushes for cleaning my stereo gear! She had observed my OCD tendencies for years, carefully brushing off each little button with her old discarded brushes ( after I sterilized them of course) and decided to get me a set. I've seen posts about the compressed air, but there's something more intimate about the brushes for me, I swear my babies sound better after a gentle brushing/cleaning? Please tell me I'm not alone!