I’ve used all of them. I have a video up using and talking about the Mondo. Atlas is right, if you go with Mondo, put center wheel to keep it from scalping. Can see in video.
In fact, if I were going with a 48 or larger, I’d go with the Sidewalk Solutions. See difference in design.
Solution 48 - Complete Sidewalk Solutions The 8gpm will push it ok, but have to move kind of slow.
I really like my mini mondo. It cleans well and a small footprint. I rarely use on residential however because same as Jesse, most my drives have a lot of slope, so I like a floater on those. That way when I get off trigger, it sits and doesn’t go rolling away. Note: On my mini, I custom ordered and had them set the wheels in some to make better for cutting in and to be able to hang over edge a little w/o having to worry about dropping a wheel and tearing something up. The other thing about the mini is you can turn the handle and machine which makes it perfect for cleaning lots of Miami style curbs.
Big Guy - a ton of them around and the go-to SC for a lot of guys, even those doing decent size commercial.
One thing to consider is the bigger units are kind of awkward to transport and take up a good sized footprint. @Atlas1 would like to see how you have your’s mounted.