SOLO458 3-Gallon Professional Tank Sprayer

I have several Solo sprayers so and over the years I've stopped buying anything else. Solo is simple and good and most of the parts are the same. They're easy to maintain.I down rated "easy to use" to a 4 because they left one side of the base plate chamfered to allow for the addition of a wheel set. That may be great for someone else but it detracts from the stability of the base.All of my older Solos came without any plastic base at all but since getting one last year with the plastic base I've come to appreciate the idea. It was a 2 gallon and had a square base.That's a minor gripe. Otherwise, this is typical Solo quality; hard to beat for the money.