I have a 1996 Pace Arrow Vision (34 feet) on which the ball joints were replaced. However, after only 6,000 miles, one of the ball joints broke while traveling at 55 m.p.h.
The joint was obviously faulty but was of a "cheaper" variety. As my dealer suggested and as I am suggesting to any owner changing ball joints, the best on the market are Mogg. Don't take the risk with anything else -- you and your family's safety are primary.