I'm looking at a new 2004 or 2005 Toro Z557 27HP Kohler with 60" Turboforce deck. The dealer has both a new 2005 model and a leftover new (0 hours) 2004 same model. The only difference between the machines is that the '05 comes with a 2 year warranty and the '04 only has a 1 year warranty (from date of purchase). What do you think would be a reasonable price to pay for the '04 model if I could get the '05 for $7,400 or so? Would $7,000 be reasonable? To high? To low? Or should I avoid the '04 altogether and just get the '05'. Thanks.