We are painting our interior walls and ceiling in our two-car garage and a separate single-car garage. The ceilings are 9′ high. Walls are 22.5’x 21’x22.5′. What retail paints are to be avoided and which retail paints are highly recommended? Are the paints at Lowe’s building supply high quality? Are there lower priced per gallon for primer paint and finish coat paint but high quality?