Now mowing 1.5 acres with a GT 225, 42" deck with 2 bagger. Like the mulch, hate the bagger for leaves. Like the traction assist on the X530, 54" deck (which dealer says does not mulch well), will get the 3 bag powerflow for grass and cyclone rake for leaves. Mowing time (now 1.5 hrs) should be reduced to an hour. New machine will have a 4 yr warranty (or used has 3 years and saves $900.00. Should I stay with current tractor, which is in excellent shape, or upgrade in the Spring?