Which whole home audio system has the best amplifier and thus the best sound, or are they all about the same? I have an Elan Home Systems Z system from 2002 in my present home. Because the home we are buying has no system, I have a chance to start from scratch. Sound is the primary consideration and price is a factor if the sound will be similar. I know of Elan, HTD, NuVo, Niles, and Crestron. Music is the key -- the other features that home automation systems like Crestron and Elan have are icing on the cake. I know speaker choice is more important and will make my decision on architectural speakers separately. Any suggestions?