IF you are hand coiling hoses to wind them up, you will find that it saves you a lot of time just in setting up and tearing down a job. There are people that believe in reacks to wind up their hoses, I believe that Michael Hinderliter has used them in the past, and I can see where they would be beneficial, but, for my purposes, working off of a trailer, and doing fleet washing, with a lot of small fleets thrown in, time is of the essence. That being the case, it takes about 1/6 the time to wind up hoses with a reel vs. without a reel. Then of course there is the thing where the hoses are properly stored in a position where they are the least likely to get damaged. The hose reels take care of that automatically.
If it was me, I would go with the hose reels, and mount them as high as reasonable. It is a lot easier when you do not have to bend and stoop to wind up your hoses.
Scott Stone