This is a Coltri MCH 6 that cost me just a hair under $3K. I saved for a year. Prior to that I had a 3 stage hand pump.
After the pump I bought a $600 SCBA tank which I got filled at two local dive shops (They would only fill to 3600psi).
I decided I was not going to spend hundreds upon hundreds on various cheap Chinese made liquid cooled compressors that constantly shit the bed and need rebuilding.
I've spent a few years on the major air gun web site's (Think ARFCOM for air guns) and there are threads upon threads of every cheap compressor that eventually died.
It's their nature, because compressing air in stages to achieve the 4500 psi is hard on them, it generates a lot of heat. The Coltri is a dive compressor and built with long life. It will last me a lifetime, and has support if I need it.
It really is the "Buy cheap...buy twice" when it comes to compressor.
and Now I can fill my SCBA tank in 6-8 mins from 3000psi to 4500, and I can quickly film my guns from the bottle (In like 45 seconds). and get about 25 refills per SCBA tank. and at 60-90 shots per fill, that is 1500 to 2250 shots. which is a full day at the range shooting multiple air guns.
And the SCBA tank is portable and requires no plug in.
For me, it was work the $3K as I now have air independence.
And if you think about other hobbies (like fishing) where guys spend tens of thousands on boats/motors and tackle, a $3K compressor is chump change. look at what a side-by-side ATV runs???
And I won't be on Airgun nation asking where to get parts for my $200 Wang chung compressor....