But then you will be able to fit paltry 400 CDs worth of music on the largest (ex-)production empeg, or perhaps 650 with largest disks now (barely) available

Hm, you have just 10GB (60-70 CDs @ 320kbps)... That means that you are one of those people actually capable of deciding what they want to listen to... Amazing! I always want to listen to half of my CDs at the same time, and not being able to decide, almost always have empeg in full shuffle