I guess it depends on what you want to use it for. I made this little setup back in the late 90's out of scrap I had on hand (all except the two wheels) so that my little pancake would be ready-to-roll whenever/wherever I needed it. Almost 20 yrs later it's still kicking.
>95% of the time it stays parked in the corner of the garage plugged in and on for filling up tires and somehow has remained air tight all these years. Unless I forget and leave a tool, like the air gun or tire inflator, attached it never ever kicks on. When I do want to pull it with me to go inside or on the road to do some trim or whatnot all I have to do is unplug it, tilt it back, and roll'er wherever I want. And if for any reason I need to remove the hose reel I just have to uncouple the air hose, lift out the bolt dropped through a hole in the aluminum angle (the bolt has a short piece of wire attaching it to the handle upright so it doesn't get lost) and the 1-1/2 chunk of Kilz-covered MDF the reel is attached to slides right out. In case anyone wonders that MDF piece was the cutout for a router table insert. It's what I had laying in the scrap pile at the time that seemed sturdy enough for the task. Turns out it was good choice.