I am on the market for a new mower. We run a several standers and several Exmark Lazer Z's. I'd like to add to my Stander fleet. With the machines we've owned to date, I've really been happy with the 24hp 52" Stander X. However there is a deal on a 31hp 61" Stander ZK at my dealership right now. The ZK does not have an AeroCore Deck. Does anyone have any experience with this machine in different cutting conditions? Does it cut alright? Does it clump bad? I know the ZK advertises itself for it's speed, but it takes longer to double cut due to poor cut than to drive really fast. Does anyone have experience with the Stander X and the ZK? To those who have had the ZK what did you NOT like about the machine? Thanks!