In my opinion, ToyBilt is junk...no matter where you buy it.
The professional mowing services in my area run Exmark or Kubota because they are both true commercial mowers. These guys are running them 11 hours a day. A ToyBilt in a commercial environment wouldn't last a week.
I have a 13-year-old Exmark with a 28hp Kohler Command Pro and it has never broken down on me (home use only). All I do is grease/oil/air and preventative maintenance stuff and use ethanol-free gasoline. Awesome machine!