I bought my last mower in 2005.
Everyone said, "Don't buy the cheap ones at Wal-Mart, Lowes, etc.. They will never last."
People also said, "Never buy name brand stuff at a Lowes or Sams either. Those mowers use a cheaper grade of metal and won't last or you can't get service there." I have no clue if they are right, I just couldn't spend $4500 at a JD or Cub dealer myself. I was paying cash.
So, I got the Yardman from Wal-Mart for $1500 and it's still going.
I have had as many as had four places that I mow, but I am down to two now. My home is 2 acres, rental place another 1 1/2 acres, Lake property about 1/2 acre, my house that I was trying to sell for two years, 2 more acres and I trucked it all over. I have used as a bulldozer at times and hit jillons of sticks and stuff and it's still going.
It has the Kohler engine and it's held up well. The deck is getting in bad shape but it fell off my trailer going down the highway at 55 mph about 6 years ago. It doesn't cut level and the transmission locked up on me once after that but I attribute that to hitting the highway in gear going 55. I am lucky it's still mostly intact.
I live out in the county and don't really have a lawn but that would seem harder on a mower than a manicured lawn. The blades are the most important thing to keep sharp. I might even change the oil this year.
Last thought on Zero turn mowers. They are not for every application , they can be dangerous as crap on hills unless you know what your doing.
Good luck, make a your choice and move on.