Don't skimp on the reel. One of my reels is a "Reel Craft" 12v which I have used for pressure washing. It will hold 250-300ft of 3/8" hose. You won't be able to use this particular reel with the iron manifold for roof mix however, It has served me well for 13 yrs. now. I do have a separate battery to power it but hey, At the end of the day, I simply pull down on the switch and hold a rag over the hose which cleans the hose while rewinding it. Best part is, I don't break a sweat....
The motor on my Reel Craft has performed flawlessly. I'm the kinda guy that $200 wouldn't be a deal breaker. It's an investment...