I have an old 46" Husqvarna I bought from Lowes in 2011. At that time it was the only brand NOT made by MTD that was under the $2000 price point in my area. Things may have changed.
Mine has a Kohler engine that has given me no trouble. I do not do a great job of maintaining it, annual oil change is about it for the engine.
The tires on mine have been junk, which is not the mower's fault. The replacements have also been junk. I wish I could buy solid tires for a residential mower since. It already rides horrible, why not keep the tires from going flat.
The deck on mine finally gave up this year. I live on very sandy soil area, so the deck gets sandblasted thin from the inside out, then support brackets break off. I've been welding it back up for the past 3 or 4 years. I was going to give up and buy a new mower, but a replacement deck was $700 off ebay complete with blades and belt. I hope to get another 5 years out of it, but we'll see.
I cut about 2 acres of yard with mine. None of it is really large open areas where a zero turn would be super fast. I have a small fruit orchard behind my workshop which takes a lot of time around all of the trees. I have never looked at the hour counter to see how many hours it has been used.