Look at North Safety and 3M
keeping a full face mask cheap is not easy
Go for the silicone face, it's softer and fits well
go for P100 filters, snap over prefilters also help with life
go for combo p100 and Organic Vapor, to have some chemincl protection too.
North 7581P100 - OV Cartridge
Organic Vapor Cartridge & P100 Particulate Filter (99.97% Minimum Filter Efficiency)
North 7600 Series - Full Facepiece Respirator
North 7581P100 - OV Cartridge
North 7506N95 Pre-Filter
North Seal Check / Filter Cover N750027
holds the prefilter on
Check 3M for the same stuff
Buy it in person so you can try on the 3 different sizes.
That mask is a hot sweaty Darth Vader experience,
If you have the money for it, look into the powered full face positive pressure masks.