Verdict: 3.9/5. The 3M 8577 is an oil-proof P95 with nuisance solvent-odor relief — useful in a narrow niche but odor-only and mixed-reviewed (3.62★). Use cartridges for real vapor.
Verdict: 4.1/5. The 3M 8247 is an R95 with nuisance solvent-odor relief — a well-received niche pick. Odor-only (not vapor protection); use cartridges for real solvent exposure.
Verdict: 3.0/5. The 3M 8214 is a niche welding N95 with odor relief that under-delivers for many buyers (2.5★). Right for light, occasional fume only; use P100 or cartridges for real welding.
