I need help re a CDP upgrade. Having replaced my VHF tuner with a DAB (Sony SDB900 - excellent buy!) and am building a 2nd system for my kitchen/family room. Have bought an amp off Ebay (Rotel 810) and am now looking for a CDP. I have some half decent Akai speakers in situ. The question is do I take my CDP from my main system and upgrade there or buy a cheap and chearful CDP from Ebay? Main system is Cyrus IIIi + PSX/Acoustic Energy Speakers/Pioneer PDS901 + Micromega Duo BS2 DAC. I am wondering about a Cyrus CD7Q + PSX upgrade for the main system and using the Pioneer CDP for the second system. The Pioneer PDS 901 is about 12 years old and built like a tank. It does not get heavy use. The Micromega is about 10 years old. Am I wasting my money considering the Cyrus CD7Q+PSX or has technology moved on so much that I will notice a significant improvement? Should I replace the DAC but keep the PDS901 as a transport? Basically the choice is between £50 for a cheap and chearful CDP for system 2 and maybe £800 for an upgrade to system 1. Some input on the relative merits would be appreciated.