I need some advice. I will be purchasing a Z rider within the next week. I'm going one of two ways...John Deere Z425 or a Ferris 1500 I am strongly leaning towards the John Deere, even though it's a residential mower. By the figures, it just seems to be the sounder investment for a solo lawn operation. John Deere = 23HP 54" for $4000 or Ferris = 21HP 48" deck for $6500. I realize the rule of thumb is to always buy commercial, but i'm leaning towards the John Deere. It seems like a solid machine. Anyone familiar with these machines, what would u suggest?