Hello guys and gals.. I have been out of the lawn care industry for close to 10 years now, so a lot of things have changed. If you will, please consider my questions and let me learn from your experience. I moved to a new house and now find myself with about 2.5 acres to mow compared to just one up until now. I currently have an older Scag Super Z 48" with a 16hp B&S. It cuts well, but is a little slow. My property is just about all located on a hillside and isn't the smoothest of terrain either. Going about as fast as the lil' 16 horse will pull, I can get the mowing done in just under 2 hours when I mow side to side. Mowing up and down the hill puts quite a bit more strain on the mower and slows it down. (The picture gives a vague view of the hillside that I mow. ) I would hope that some of the newer mowers could beat that time by quite a bit, but haven't done a lot any time trials. I am considering a couple of different mowers, so please give your opinion on if they sound like a good deal or not. One mower that I'm looking at is a 2001 Scag Turf Tiger 61" with the 27 HP liquid cooled Kawasaki. Used privately only, 185 hours. The asking price is $6500, I think I can get it for $6250. The other mower that I'm considering is a Grasshopper 721D 60" with about 1850 hours on it, including the hopper bagger. Firm price $4000. I have an offer of $2000 for my Super Z with about 500 hours on it. Is this a generous offer? What improvements can I expect out of scag's newer products vs the grasshopper? Lastly, would I be better served to just put a 20hp+ motor on my Scag and keep it? Is there any way to smooth out the ride, for example, any engineered seats or so forth? For the record, when I was in lawn care, my favorite mower of all time was a Kubota FZ2100 ( a diesel, front deck, 4wd - zero turn mower). It was only one of two that I ever saw. The cushy ride was so nice compared to my Super Z that jars me to death. Any suggestions on what to do?