I did a bunch of research last year on zero turns and decided to go with a Bad Boy Rouge. For the cost I couldn't find a comparable model in terms of features. As with any brand, some people love them and some people despise them. Overall, I found no compelling reason to avoid them.
The Rogue itself is a great unit other than the cut challenges. The front and rear suspension makes a HUGE difference in ride quality and how fast I can mow. The Reaper tires provide great traction and allow me to mow my road ditch slopes and driveway slopes with ease. The travel speed increases and 72" deck width allowed me to cut mowing time on my 7 acres down from 4.5 hours to under 3, which was really my main motivation for getting a zero turn. Gas tanks are large and allow me to cut my lawn multiple times before refilling. Air ride seat (an option, but one my dealer orders on all units) is very comfortable. Controls are easy to use. Deck and the entire unit is built like a tank.
My mower has been quite nice overall, but was not without issues. Foremost, the cut quality was just not to my liking. At first it was a leveling issue. As I've learned over time, having gone from a 54" deck on a Deere GT to a 60" deck on another Deere to a 72" deck on my Rogue, the wider you go the more 'digging' you get on even semi-uneven ground. But the bigger issue was that the deck would leave strips of grass behind the front caster wheels that weren't cut well. I was very surprised because I thought by going to a zero-turn with higher blade tip speed than the GTs I used to use it would be a better cut. Apparently I'm mostly alone in this issue though, because I found almost no other Bad Boy owners with it and my dealer hadn't had anyone else complain. That said, both the dealer and Bad Boy itself were very helpful in working through my issues. Bad Boy even went as far as shipping me a set of new front caster arms (which they said were going to be offered on 2022 models) that are adjustable and allow the wheel track to be moved away from the deck spindle alignment. They were free and the dealer installed them under warranty. Dealer also did a bunch of other checking and adjustment on deck leveling and belt tension to make sure everything was as it should be to insure a good cut. In the end, the cut quality is decent, though not perfect. My prior Deere (x758) isn't perfect either though... that leaves dandelions very raggedly cut unless I go super slow. So maybe I'm just too picky.
I have the 35HP Yamaha fuel injected engine. Plenty of power. As noted above, while super for traction and stability, the Reaper tires can chew up the lawn if you're not careful.
Rob