I built this one:
https://trail4runner.com/2018/05/06/diy-4-tire-inflation-system/
It works pretty well. I haven't actually timed it, but I think I've decided it takes just as long to get it out, get it connected, and get it put away as it does to use my rapid deflator or inflate one tire at a time from the power tank.
@The Car Stereo Company's might be better though since it is 4 separate hoses it wouldn't take as long wind up the hoses since they wouldn't be all tangled. Plus the 90 degree shut off valves make it awkward to pack. I also measured my hose out before cutting them, so now each one kind of needs to go to a specific tire, which is a pain; I need to label each one to make figuring that out quicker. I'm thinking I'm going to cut mine up a bit and turn it into something like
@The Car Stereo Company's.