I've owned an Emerald Estate 750 for about 3 months now. So far the spa itself has been excellent. However I've had several issues with the spa cover, which can be summed up by saying the seams (at least on my cover) are VERY weak. This issue was reported (under warranty) to the customer service representative by my dealer two months ago tomorrow. As of right now I have still yet to receive a replacement cover. Emerald will tell my dealer one day that the cover has been shipped, then when it still hadn't arrived two weeks later, they were told, "Oh, it hasn't been shipped yet. We don't know what the hold up is." I hope this is an iscolated incident, and other Emerald owners have had more luck with warranty service.