The airgun market and the scuba market are totally different markets. The articles that you read were hit jobs fabricated by my filter competitor . Let me start off with his filter costs $400, mine costs $180.. Same length and roughly filter capacity (i have more). He purchases his filters from Nuvair for about $175 (a fact that he denies), I manufacture my own. He has to add all these extra parts to justify his high cost. As you know, scuba air needs to be as pure as possible, airgun air does not. Airgun air only needs to have the moisture level as low as possible. First false claim that he makes is " the desiccant sieve 13x will erode the aluminum wall"....that is totally false. I have spoken to numerous engineers and scientists about this and they laugh when I brought this up. I have their emails explaining why this is false. Yet this lie continues on. People on the airgun forums have called this person out over this , yet he continues to make his false claims. A PMV is 100% necessary for filtering scuba quality air, for airgun air it is not. Scuba air pressure lets say starts at 400 psi - 3,000 psi.... airgun air starts at 3,000 psi and go to 5,000 psi. A good working PMV should start at 1,800 psi . We don't need a PMV for airgun. He has to get his price up (add more parts that are unnecessary). Its nice to have a gauge at the filter (unnecessary), check valves and on/off valve (nice to have but unnecessary). I would like to drive a Ferrari but I have a Chevy truck. Next claim, that the desiccant is loose packed. I use (2) 1/4 felt pads, one at the top and one at the bottom. When i screw the cap on , you can hear the desiccant compressing (crunching) down, it is tight. For the scuba filters, I use (3) 1/4 felt pads , SS washers, SS spring and a SS steel liner (in case the owner wants to use Hopacalite). Next false claim is that i don't have a moisture separator?.....all my compressors have built in air/water separators, some are fully adjustable and automatic. Next issue, my hoses and QD fittings. I have used the same hoses for years now, well over 8,000 hoses and 2,000 QD fittings for my compressors. For the Diablo filter i use the same hose, but I had to use a different QD fitting at that time. It had a larger diameter and was brass ( i have taken brass fittings well past 12,000 psi). I used about 200 of those fittings, I manufacture my own full SS QD fitting now and its the smallest diameter in the market. One of my hoses a customer had burst on him, he wrote on the forum how he could of been killed and all this BS. How the hose burst and came apart.....totally false... he sent me the hose for inspection. The plastic that covers the actual hose part , got some air underneath and popped. The hose never came apart, yet he went on the forum spouting off. Now thousands of people think that it did. My filter competitor jumped all over this caring the lie even further.... all mechanical things will have defects every now and then. I do personally inspect all my compressors and filters ( and yes, to 6,000 psi for the filters and 5,000 psi for the compressors ). So wrapping this up, don't believe what you read on the forums as actual truth, email me with questions that you might be concerned over and find out what the other side of the story is. Some people might have agendas that you may not know about. If you tell a lie enough times it eventually becomes truth. Thanks for letting me tell my side of the story.