My property is 3 acres with some hills and 34 trees. I own an old Snapper Z1401K at the moment (still love that machine BTW) The climate is very wet in Belgium and my property is a bit swampy. I am tempted to buy a Kubota ZD 21 with 54" deck (PRO deck not available yet in Belgium) My dealer wants to sell it for 15000 . Is the ZD 21 a machine that lasts? How is the cutting quality? Would you recommend the mulching kit?