There's nothing inherent to an inverter that dictates that it will be cleaner power simply because it carries the label. Generator/alternators either. It's all about $'s and quality. You can't build, market and sell a quality gen-set for little to nothing but on the other hand raising the price doesn't necessarily make it higher quality. Home & portable power plants are extremely popular now and an extremely attractive market for the corporate world. The old standard producers woke up one day and found the market flooded with low budget look alike sets at 1/2 the price they had been traditionally selling their tried and true quality units for. Big box stores, hardware stores, sporting goods stores, auto parts stores, chain saw shops, every where you go there are gen-sets. The plethora of names and models is mind boggling. A corporation like Toro could very likely to contract out to 'me-dang-good' from South Korea for a low budget set who then consolidates parts from India, China and the US to put a package together and slaps the Toro label on it. The consumer assumes it is a good set because Toro has a good rep for mowers. 90% of them will never know because they won't run the dayem thing anyway. They only bought one because their neighbor bought one. Big corps know this and pray on it. Even if it was a good model this year doesn't mean it will be next year. Next year they find a new source for piece parts that ups the bottom line a few points.