Geoffkait,
I have not listened to the Mothership CD's. But I have read several reviews stating that the Japanese SHM CD's are the best sonics available, including the Mothership version. That is unfortunate, from what I have heard on the Led Zeppelin SHM CD's so far I am not impressed. The set is beautifully done, nice mini albums and jackets. But the sonics are nothing special. On the other hand, the Louis Armstrong Ella Fitzgerald SHM SACD is absolutely stunning.