Temperamental, but not junk... You make sure your chem-draw jug is full and metering correctly, you keep the filters the the thing clean and you do fine. If you suck air through your chem-injection system it won't siphon from the jug. If your filters get plugged it won't siphon from the jug. If you turn you pressure up too high it won't siphon from the jug. It just depends on how you do it. If you are getting air in your lines, don't use a hydroforce, if you don't want to maintain it, don't use a hydroforce. If you use pressure over 350 or 400, don't use a hydroforce.
And quite frankly, I would be terrified to use more heat than my old white magic kicks out. (About 210 at most, even though it reads 230)
As far as the revolution goes, I am scared of it. It's like a rifle sight. Sure, it'll be accurate, as long as you don't bang it on something. I don't know about you, but my equipment takes a beating as I drive over these potholes all day long.