There is a reason for charging as much as they do. You mentioned their stoves are on the high end. That is the reason why. Quality ain’t cheap. My explorer 2 has the porcelain finish and it’s constructed by cast iron jacketing a welded steel box ...The best of both worlds—Extremely durable.Did plenty of research before purchasing both this current 5100i and one of their free standing stoves back in 1991.
I compared it with the Lopi and some other name brand that I can't recall.
I will admit the newer version of Quad's current secondary combustion system (ACC) isn't rated as high in BTU's as this older ACT version.
I would lean to believe that the majority of (ANY) complaints may have to do with install issues, rattles and blower noise, operator error, heating expectations, and the like, as I feel Quad makes one of the best high end stoves on the market and have done so in the past. They surely charge for it!