Not sure of the name of the cart as I actually purchased it used.  Nothing special, though and doesn't have 4-wheel steer or anything fancy.  Once in a while will have a little issue knocking corn down on our steepest fields side-dressing, but as long as the operator is paying attention he can over come it with the tractor in most situations.  Not perfect, but haven't knocked enough corn down yet to justify changing yet.  We do knock some down on the headlands, but previously we were side-dressing with a 6-row cultivator and saddle tanks and it knocked much more down than our 13-row side-dresser pulling a tank.  Ideally, if we could get enough gallons on, we would have all the 28% on the tractor and we would knock very little corn down.