I run an Exmark and really like the machine. Nozzles are easy to swap out for different rates, I usually run the stock ones which will give you 60k a tank but have a pair of grey tips that will spread a tank over 80k that I use on some larger lawns. It's easy to calibrate your spread to match the spraying pattern and do both. Learning to circle is a must to get the most out of the machine, especially if you want to do both at once. Spreading and spraying at the same time while doing a grid would be a pita since the material from each lands at a different distance from the machine.