I am looking at a new machine to replace my JD. I am introducing my customers to mulching and have started by using a Quick 36. The machine does and excellent job and the customers are amazed at how little difference there is in the appearance of their lawn when bagging and mulching. Now I would like a rider (Exmark or Hustler) that would do the same thing. Which is better? Both dealers are about the same as far as service, although one is in town and the other an hour away. By the way, the size of the machine would be small to medium (42 - 48"). Thanks for the help.