I own a Scag Wildcat with a Velocity+ 61" deck, regular Scag seat, and full Scag 12.5 bushel bagger,(3 bags). I've owned it since 200 hours in 2009-2010, and have 150 hours more on the clock now.
It's a bulletproof tank, but not the smoothest ride or most comfortable lounge chair out there.
I just bought a Husky AWD, 322t Rider with 41" mulching deck to replace the Scag for the terrain I have. The Z-turn is too dangerous for my hilly terrain; it is too easy to possibly flip, and it has a mind of it's own on wet or slightly wet grass.
Now I don't worry, don't bag, just pulverize everything into the lawn, and yes it takes more time with the smaller deck, but everyone, wife, grown kids can operate the 322 with no fear of flipping or running downhill out of control when the Scag decides to chase after trees.
Zero turns are great for a lot of people, but the last 150 hours has taught me not for my property.
Hope this helps. Know exactly what you're buying and what it's limitations are. And what your terrain is best suited to. Otherwise you'll waste money getting something not suited to your specific needs.