They're a little pricey up front, but I figured it was cheap overall compared to the long-term costs of using something less effective. Having eye protection integrated as well is ideal, since it never fogs up.

What's your solution for the full face with glasses? The spectacle kit looks like it's a frame that you need to get custom lenses put into. The few times I've worn mine (FF-400) I've just suffered the extra ear pressure, but it's not great. It's also a size too small because it was what was in stock at the start of Covid when nobody knew wtf was going to happen, but I don't see that increasing one size would change much. I plan to eventually trying to form a custom thing to hold a regular pair of glasses.

And have you really found the P100 cartridges need to be discarded every few weeks? The only things I've found say that particulate filters only need to be discarded when they become difficult to breathe through, and I've never actually reached that point.

Try spending an hour in your shop constantly lugging heavy tools and wood around wearing that respirator on a humid 80 degree day, then you can be smug and waggle your finger at laborers for not protecting themselves.