I've got the opportunity to purchase a new Ferris is3200z Midnight edition or a new ISX3300. I currently run a IS3200Z with a 61" deck. Either of the new units will have the 61" deck and 37hp Vanguard. does anyone have any experience with the old versus the new suspension? Or with the better shocks that are on the midnight edition? Any tips or comments will be greatly appreciated. Thanks in advance.