I am trying to decide which to go with for my next quad. Obviously the 400 would have to be used, and if I go with the 420 i would get a new one. I like the switch activated 4WD, styling and the display/GPS of the 400, but the IRS and FI are pulling me the other way a bit. I'm also a big fan of the 400's Hydro-mechanical CVT v.s. the Dual Clutch setup in the 420. What do you guys think? Thanks,