Is there an easy compressor out there to fill scuba tanks?

I’ve been reading on the forums about all the maintenance and extra ad ons necessary for compressors to fill scuba tanks for pcp’s- my question is this: Is there a compressor to fill a large capacity air tank that doesn’t require a lot of maintenance? One that is pretty much just walk in, fill a tank every once in a while and not worry about having to change oil, fill a water bucket, etc?
 
Most true compressors use oil for lubrication. Oil lubricated compressors require you to change the break in oil after 5 hours or so. Booster compressors like the Shoebox, Altaros, etc. require a separate first stage feeder compressor. The $300-400 Chinese compressors omit a decent water separator tower and they require a separate bucket for cooling. When you enter the $1299 and higher range you are getting into the realm of low maintenance and plug and play. The Carette is the least expensive compressor that has all of the features that users would prefer to have. It is plug and play after you add oil and water into it's cooling system. It has a belt drive, it's extremely quiet running at low rpms, it has adjustable pressure shutoff, an hour meter, and auto moisture bleed. Hook up your tank, turn it on, and you can walk away until it shuts off at the desired fill pressure. It has features even the $4000 dive compressors charge hundreds extra to add.

Omega compressors are also plug and play. The problem with them is that they are basically motorized hand pumps. They sound like a washing machine because they are a hand pump with lots of attractive features. They require the owner to apply grease to lube the rubber o-ring seals which wear out and require rebuilds many more times than a true high pressure compressor piston design. The rubber o-rings will require a complicated, time consuming disassembly which is beyond the capability of most buyers. Watch the 30 minute Youtube disassembly video and see if it looks complicated. Omegas were state of the art a few years ago but are not a good choice when compared to more recent compressor offerings. Omegas provide the least compressor value currently based upon their high price, obsolete design, and service requirements when compared to compressors like the Carette, Air Venturi, or Daystate LC100.

If you are willing to spend $2295 or more you enter the market of true dive compressors that are air cooled, 3 or 4 stages, super durable, and only require oil and moisture filter changes on an infrequent basis. Single user airgunners will change the oil in their compressors no more than once a year and it's a 15 minute simple maintenance. Air filter changes are even easier. The more you pay usually means better build quality of the compressor.. A true dive compressor will have higher resale value and less frequent rebuilds.
 
I have an Omega Super Charger that gave me a fit at first because it had a chip broken out of the bottom piston rod and would not build up air pressure. Don't know how it got past all of the supposed inspections that they are supposedly put these compressors through before shipment to the end user. Anyhooo I ended up sending it back from NC to Arizona and had to pay $125 for freight. I guess that is what ticks me off most about it was having to send the compressor back to them when it was shipped new to me with a defective part and having to pay freight ... something is wrong with that picture. However, other than that, the compressor has run like a dream. It still has the same water and coolant that I added to the reservoir when I got it and after a year I have only had to twist a knob one click every 6 hours of run time to add the required grease which takes all of 1 second to accomplish.
 
I have an Airetex 45 compressor. After much research I decided to pay more up front, and not look back. "buy once, cry once" This has been the best investment i have made regarding air guns. I fill my tank, as well as several other local air gunners, and even fill my buddies 6000 psi nitrogen tank for him (to about 4800 psi) My compressor has moisture traps as well as scba quality air filter unit. In two years and countless fills, I have 10.8 hours on the compressor. Needless to say, I shoot much more and don't worry about running out of air, just pellets!
 
I have an Airatex 45, expensive right off the bat, but I know my tanks are filled with dry clean air. No standing around wondering if it will ever fill.
its big heavy and requires 220v. I also like that they are located right here in Texas. When I got mine I drove to the owners house and he gave me a usage and maintenance lesson, it's easy and requires only annual care even if used in a commercial application.
changed my shooting habits, I go through lots more pellets now.

Hairsmith