I thought about a reel, but instead choose to just use a high-quality Flexeel coiled drop cord from my overhead air "outlets". It stretches out a good long way when needed, but retracts into a more compact setup when not in use. I have hooks setup so I can completely get it out of the way when I want/need to. I'm about to get a second one for convenience. With a reel, I would worry less about the reel and hose, but about the rotating connection required between the reel and the supply...something that I've had very dubious luck with on water hose reels. I don't want any air leaks because that will cause excessive compressor run.