IFS brought better handling to cars but with a big increase in moving parts. IFS does the same thing for MH's that need better handling. Monaco's outboard air bag suspension does not need improved handling so all the extra moving parts of a IFS system are not needed. Ever wonder why 18 wheelers are still on solid axles, they give less problems. 5+ years ago I looked at a bare DP chassis with IFS, the 23 moving parts (instead of 10) turned me off. The huge sway bar needed to help it keep the MH from leaning (another 6 moving points) bring the total to 29 instead of 10 sealed the deal that I do not want a MH with IFS.
Do Prevost, Newell, or Foretravel use IFS?