Larry, I used to use the 3M Airlite but spares in the UK are difficult
and I think it is discontinued and as you say pricey! Invested in the
Airshield last October and am pleased with the whole arrangement.
Noise levels are less than my 3M visor, filtration and seals good.
Downside, 14 hours recharge for battery pack, have bought 2 packs to
keep them in rotation, really need 3 plus extra charger. Will
probably purchase the same soon, much cheaper than the 3M.

Regards,
Peter Charles Fagg
Freshwater, Isle of Wight,
United Kingdom.
www.petersplatters.co.uk
Each can do but little!
But if each DID that little,
ALL would be done!