Having once owned a Stiga ride-on mower, I can only give my personal experience. In a nutshell, I would never buy another one again. The mower was plagued with problems and issues from the beginning, ranging from weak wheel hubs that would shatter without warning, sudden brake failures, sticking gears, blowing exhaust fumes back into the user's face wile operating, lack of power where it is most needed, constant belt problems... always something. They had so many safety switches in place that they in fact made the machine more dangerous in my opinion due to the many frustrations involved when trying to pinpoint an engine problem. I found the electrical system to be exceptionally bad. The designers had clearly under-estimated almost every aspect of the energy consumption. The battery as recommended in the manual was far too small to begin with. I would buy a brand new quality battery and install it. The next day it would not have enough power to turn the flywheel. I would test the alternator and found it was charging at full capacity, but was barely enough to keep the battery topped up. If the engine failed to start a few times, the battery would quickly drain. I ended up disconnecting the battery at night, thinking that was causing the drain problem. It made no difference. Over time the starter motor got sicker and sicker. Even with a fully charged battery, it would not start the mower. There always seemed to be something wrong with the electrics. It also lacked power where it was needed. Although it had a huge Briggs & Stratton engine, for some inexplicable reason whenever I entered a patch of thick grass the engine would die. I disliked this mower with a passion. I ended up selling it for spare parts. I was never so happy when I saw it leaving my front gate.
