We recently purchased a queen size ghost bed for our daughter and a king size leesa for us. First few nights were a bit rough but after that we've been sleeping really well. However, we're leaning more towards the ghost because it feels like it provides more support. The leesa is really comfortable, but the ghost provides the same firmness but you sink into it more. We're probably going to return the leesa and purchase a king size ghost bed. The extra price for the leesa just doesn't add up when compared to the ghost bed for the same if not better comfort.
I was hesitant about buying a ghost bed because I was afraid it wouldn't be firm enough, but it's perfect! Great support, no foam feel, and you can move easily in the bed. I also bought the foundation and it gets the job done as well. The foundation is easy to put together.