I've done several modification to my coach in search of the perfect ride and at this point in time looking back the lowest cost stuff made the biggest difference. Coach weight and proper tire pressure, replaced worn out rear sway bar bushings, replaced worn shocks and moving the end links on the sway bar (aka cheep handling fix). Last owner insulated the engine cover so heat and noise are no worse than my Honda Accord. The coach tracks well, it response to steering input and wind sway from passing vehicles is easy to feel coming on and to correct for.
I think having stuff in the coach that makes a lot of noise when moving, mainly dishes, pots, pans and such, the effect of poorly maintained roads are amplified by the noise when compared to my daily driver. Also since I only have a few feet within my lane to move around a lot of the time I have no choice but to take the hit rather than avoid.
Over all I would call the performance of the chassis with my coach fairly stable and predictable with one down check being weather related wind gusts. With trucks I know it's coming and can be ready for it. Not so much with weather. Steady wind you can deal with but the rouge gust will push you around. I've come close to getting pushed out of my lane but not quite.
