After reading Yank's thread, I can't help but share my own excitement as I wait (patiently, patiently, grrrr) for my new X758 to arrive. The dealer has to order everything from Deere, so I guess at least I should hopefully get fresh stock. :-)
The decision between it and the 1025R was almost impossible and took a couple months of research and thought, especially since my neighbor has the 1025R and another down the street also just got one. But in the end, while I see the value of a FEL, and could certainly make use of it in a limited manner, I decided the X758's benefits were more important to me since my primary uses are going to be mowing and snow blowing, and I want the best for those tasks.
Got the 54" blower, 54" HC deck with mulch control & center wheel, rear electric spreader, and brush guard (for summer only I guess). Also got the electric deflector kit for the blower, a Deck Dolly, and a cheap JD poly trailer to supplement my ancient (and somewhat too small) 50.
I'm upgrading from an LX255 bought in 2000 that's still going strong but is just too underpowered for my new property, which in turn replaced an old Deere 68 rear engine. I can't remember a time in my life I haven't ridden a green mower, and I'm hoping the X758 will be the last one I ever need to buy - excepting having to upgrade to something bigger for some reason!