Does DI water really make things spot free? Is it necessary when doing fleets? How often do you have to have it recharged, is it after so many gallons used or what? it it expensive to have?
What the others said. It will make your life easier. Call me if you need a local Water company that won't rip you off. Some of them require HUGE deposits, etc.
By the way, you live only a couple of miles from me. I am at Lindsay and McKellips.