I don't think it much matters which filter you go with. As long as it has the features you want and is at least somewhat half way decently built. They are kind of hard to mess up. Just a box with a squirrel cage fan, some filters, and some electrical controls... I personally went with a Grizzly G0572 for my 18x20 garage shop (9' ceilings) and added a PSI washable filter... Even with my DC going, this makes a huge difference when using machines that I can't collect from very well...