We are in the process of purchasing 6 new units. We have had our current mowers for 2-3 years now. Anything we should look out for with the new sizes and features with Exmark. Last season we ran 4-52's and 2 72's. Heard the new 52 has a lower quality deck, and that we will have to go with a 46 or 56. We put about 1200 hrs on each mower each year so if the new decks are junk let us know. I have heard the sales pitch on the new this and that. Just wondering what they like in the field from anyone who has used these sizes. Thanks in advance.