The biggest plus are the geotubes. Temp control was impressive! As far as design and beauty went, they did alot with glass bottle insets, but sometimes the bottoms broke out, the part facing the outside in the wall. And I had no idea how they could replace it. I liked the indoor greenhouse part, but felt it was way too small of an area in the ones we looked at. I would design one alot bigger than that. Water is an issue where they are located, and wondered about the water tanks. I always look at a place I see with the thought of how I would like living there. The Santa Fe earthship community didn't seem to have much going on outside the individual earthships, and I'm an outside lover. It'd drive me nuts to spend all that time inside a building. It's been a number of years since I've been back there, and the price of a modest earthship was nuts. I liked the build design, using tires and all that, but could not figure out why it was soooo expensive, except maybe because it's Santa Fe.