I'm going to get torn apart by a couple of people on here for saying this, but you have obviously not operated a ferris 3100. They have A-arm suspension setup like a car. It's really not that complicated if you think about it. I mean how many years did auto manufacturers use straight axles with spring stacks and shock absorbers. Most vehicles have gone to a torsion bar setup or A-arm setup, so ferris is far ahead of very one when it comes to physical suspension. Mower manufacturers have been putting suspension seats on for years which help slightly, but I'm being completely serious in saying that you will not believe how smooth the ferris is. A user on here which I will refrain from mentioning despises the ferris and believes its an over complicated "piece of chit". I can say that until you own/operate one for hundreds of hours you cannot make such claims. I'm in no way trying to start up another stupid ass debate. I'm simply posting my view point on suspension and the fact that it is useful in our line of work.