I'm looking for a new mower right now. I will buy either hustler or exmark. I have two older super z's, as well as an exmark lazer z. I will go with a 52 or 60" deck, haven't decided yet. The newer exmark's are more expensive. I have been thinking on the x-one, haven't looked close enough to tell why it is a step down from the Super z. Any knowledgible opinions on any of these models?