I keep hearing the same comments time and time again about cheap priced volume builders. My house has this problem and that, they never return my calls, etc, I reply you get what you pay for. Buying a home is the same as buying any other product.
You cannot expect a cheap volume builder to give you a quality product for such a low price and the sheer volume of product they produce. If you ask a tradesman who the manufacturer of his tools are, he would reply Australian, Japanese, English, and German and very few would say Chinese. The reason is simply they need their tools to last the distance so they pay a little more and get a quality tool. So buy cheap and you will pay in the long run!