I am starting to look at upgrading some stuff in the shop. At this point I use a box fan with a filter taped in front as air filtration. I use my shop vac to suck up the sawdust after I cut. If you could only purchase 1 item, which would it be. I am looking at the WEN air filter system that Steve Good has reviewed. Or I am looking at a cyclone dust collection system at the saw. I have been looking at a DIY system, but want something much quieter than my shop vac! Any thoughts on using an older house vacuum and something smaller than a 5 gallon bucket to build a cyclone dust collector! I don`t mind emptying the bucket more frequently!