A very good friend of mine told me he would buy a home from them. That said, he mentioned that they do use some inferior products during construction, like OSB. OSB isn't necessarily a problem, but if you don't seal it well, it sure is. He noted that some of the homes he had seen built by K. Hov recently, will be needing paint within a few years.
Not much bad about the company did he say. I found it rather odd, usually he rips on the competition. He was a hard arse on his own guys to build the best home. He now oversees the lumber supply in the metroplex for Pulte homes, used to build for D. Weekly, before that Lennar. Oh, he lives in Keller, and has entertained the thought of living in the neighborhood development you mentioned.
Hope this helps.