You may want to check the Carlisle Versa Turf as tires. I have them on my SCUT and mow steep hills, they have great traction and don't tear up the lawn.
It is hard to not love a Scag!I can't speak to your brand comparison questions but I can speak to buying a zero turn. Less than a month ago I made the switch. I had a very trusty but very tired Craftsman YT3000. I've had it for years. Where I lived previously it was fine. But now I have much more lawn to mow and the terrain can be rough. I wanted a commercial grade for those two reasons. I wound up going with a Scag. My mowing life has changed dramatically for the better. I initially wanted a different brand and model but to supply chain issues what I wanted wasn't available and no word on when it would be. So I opted for what I wound up buying. My only regret was not doing it sooner. My weekly cutting time went from 3.5+ hours to less than 1.5. I don't have hills but I do have slopes on my property and it handles it no problem at all.
So how many acres are you mowing with a battery powered ZT?Mowed the grass yesterday with the Ryobi ZT. First time to mow with much grass growth. Have had a lot of rain recently. Did good.
Mowed one area that I normally only mow once/yr. Had to go over spots with tall grass a 2nd and sometimes 3rd time to get it all. Typical.