We have 2 Cubs. I have an M60 Tank which isn't cheap and my wife has an RZT 38" zero turn rider. Her's has a Kohler Courage 21 horse and mine has a Kawasaki 26 horse. Both are good, I think the Kaw is a bit better. I have 700 hours on my tank and have no issues but an ocassional drive belt. She has about 100 hours in her's and I've replaced nothing so far.
Engines are generic. What is important are the transaxles and transmissions. I'm a Hydro-Gear person 100%. 99% of the commercial units use Hydro-Gear no matter what brand and so are both the cubs we have. No issues with either units transmissions. Mine actually has filters on each unit, my wife's don't. You get into transaxle issues, the bucks mount up real fast. Husky might make a good chain saw but mowers, I prefer a Cub. Have one of their tillers too. It's also bulletproof.
Love to have a Kubota in as much as I have 2 large Kubota tractors for farming but mowing the lawn, a Kubota is way too expensive.