Actually, the M2 rides almost as good as the FLD did and the FLD had the air ride up front. The last seats I put in the FLD where much better than the seats I have in the M2 right now. The M2 is much more stable with the 14,600 lb front axle.
As long as I am riding my mountain bike the back is all good no matter what I am driving.
2012 Showhauler 28'6" Motorhome on a Columbia w/ 450 Mercedes.