Ksland,
while i have purchased over 5 toro z master from Philbricks in the past 6 years, you might want to try Granz Turf Depot in Salem, NH. They are great guys, know their stuff and they have a Proparts division which is awesome. Philbricks does not have a great reputation in the past, but they have made me their "poster boy" for new commercial sales. They have excellent pricing there.
Mike