I went to the F-53 after having had the F-450 in a C class with the post plug spitting V-10. I've had 3 of the F-53 chassis based RVs, two with the Mor/Ryde suspension and one without. The Mor/Ryde on the current and short lived previous RV was an obvious major improvement. Even the pile of junk RV I bought and dumped after a few weeks over unresolved slide problems for a sizeable loss had absolutely no problems With the Ford chassis. The Current, a 13/14 Itasca 35F rides and handles very well at the speeds, 62 to 65, that I drive. Jus an added note, it the weather is bad, windy and/or wet, I drop speed accordingly.
Stan, Shirley & 2 Schnauzers
RV: 2014 Itasca Sunstar 35F
USAF Retired, Life Member: VSPA, VVA, DVA,VFW