I use a " ionic air purifier" (i.e. a fan/filter + ionizer) and it works very well. I have it set so that it blows filtered air gently across the work area. The idea is to have it create a slight positive pressure over the work area, so that you are working in a pool of filtered air. Sounds complicated, but it simply means having a back and sides on the work area, and having the filter output blow into this area. The ionizer part of the air purifier really does make dust fall out of the air. I was surprised at just how well it worked.

One advantage of a filter is that if you do use canned air to blow away dust, you can direct the jet at the filter and know that the stirred up dust is going to get pulled out of the air, not just redistributed !