The heritage has proven to have filled the void that the castine couldn't. Longer burn time due to larger firebox and extended heat emission due to mass of the stone. It took my husband a while to get over the faster respone time of the cast iron but now he's become a convert. I'm not giving the castine a bad rap because it was more than adaquate until we added some square footage and glass to the mix . Oh yeah you guys are the ultimate "stoveheads" ..it's cool to be hot.