Thanks for looking...
I have 2+ acres.
I have a simplicity regent (Which I love the cut) but the build quality is just not strong enough.  The frame is cracking. steering is going.  
The ground used to be a pasture.. but I have tried to smooth it out.  
I will be using the new mower with mulching 
I also have a kubota bx2670 with a mid mount mower.  I now use this on the back half of the property where it is a bit rougher.  
I would like to find a mower that will cut my mowing time down, but sill allow for a great cut.  I need something durable, which is why I thought of the ferris.
The other brands that I have around me are Kubota and Scag.
I was thinking of the is2100.. but would like to hear others opinions / options.  
Thanks