My brand new Deere Z945M EFI with a 60" 7 Iron Pro deck. Tweel rear tires and a suspension seat - $11,178.98 out the door less tax (we're ag exempt.)
I just finished mowing maybe a combined three acres of pasture, a barn area and a sort of "yard" . Lots of oak trees to dodge for some of that acreage and roads to mow around, etc. It took me about 90 minutes, maybe a little more to mow what was taking me half a day on the 46" Gravely Promaster 100 ZTR. I have about 500 operating hours on the Gravely so I was immediately productive on the Z Trak. When I would finish all of that mowing on the Gravely, I was tired and beat up - rigid seat with minimal padding. I felt like I could easily mow for several hours on the Deere and not feel that beat up.
What amazed me was how fast the 945M was - I mean maybe three times as fast as the Gravely. I was mowing in tall grass and weeds (like 24-30" tall) as fast as the Gravely would run flat out. I am really blown away and my only regret is I didn't buy this or one like it a few years ago. I literally hated mowing with the Gravely and put off mowing until I couldn't stand it any longer.
The 27 HP fuel injected Kohler was great - when I got in a really dense area of grass/weeds/wildflowers I could hear the engine go under load and quickly recover. Never did I feel like there wasn't enough power to cut a 60" swath while moving at a fairly decent speed. It would be interesting to compare the carb version to this EFI model. Oh, fuel burn - dealer filled the tank full and the gauge is maybe a couple of needle widths above 3/4 full.
All maintenance things are easy to access, very well thought out.