There is a hard ceiling on what a soft chamber can do. Fabric holds about 1.5 ATA and no more. If your protocol calls for 2.0 ATA, no soft-shell chamber at any price will get you there, and that single fact is why the Quest30 exists. It is built from stainless steel and it reaches a true 2.0 ATA, adjustable down to 1.3 ATA so you can work up to full pressure over weeks rather than starting at the top.
The second reason people buy it is that it runs. A steel pressure vessel with a sliding door has no zippers to wear out, no seams to separate and no fabric to degrade. That matters most for clinics putting five to seven sessions a day through the same chamber, but it matters at home too, because this is equipment you buy once. Inside there are dual control panels so you can run your own session, a two-way phone and speaker system to talk with someone in the room, and a digital display tracking oxygen purity, temperature and humidity in real time.
The Quest30 is also built to be comfortable for a full hour at pressure, which is where cheaper hard chambers fail. Built-in air conditioning pulls humidity out and keeps the interior cool, since compressing air generates real heat. Two full-size windows at both ends keep it from feeling like a tube. LED reading lights, an automatic session timer and an anion air purifier are all standard. You can add red light therapy, an entertainment system and a water chiller, so the hour becomes something you look forward to rather than something you get through.