john deere difference questions...

[nohatnocattle]

Hi Folks,

Central WI here, 4.5 acres, many, many obstacles. Just moved in and looking for a late season deal. I will post this same ? over in General Lawn and Garden as well. MOD isn't important, although bagging might be. I have it narrowed down to basically 2(ish) mowers.

1. X700/720/724 series with a 60" 7-iron deck.
2. Z720A with a 60" 7-iron deck.

In general, here are some questions:

• what is the difference between 7-iron and 7-iron PRO?

• starting with the x720, they have fuel injection/liquid cooling but I cant tell if the z720 does have EFI? (it looks air cooled)

• they dont list a bagging attachment for the z720, is that correct?

• i dont see a residential warrantly listed for the Z720series?

I would probably buy a used X series, 2010-2012, under 100 hours for about $8,500-$10,000 with balance of 4 year warrantly.

A local dealer currently has a new 2012 Z720 for about $7,500.

Any thoughts or opinions appreciated. Obviously, they are two different styled machines. I currently hire a lawn service and the owner/operator has used each style on my lawn and thinks it's a fairly even discussion. I realize the X can be more versatile but I have yet to really pin down another significant use for it.

thanks in advance.