Turko,
Difficult question - no CD is close to analogue presentation. I own a SME30A/2 and I can not say that the CD8 is closer to the analogue sound than the CD7 or vice versa. The type of sound of the CD8 is quite similar to the CD7, but has a more defined bass and more detail in the higher frequencies. You can have much larger differences in analogue with the same turntable and tonearm just changing cartridges.
I have not compared the CD8 with the CD7 with the upgraded 5881 power supply - the friend who got my CD7 had it modified and told me it was a considerable improvement.
Even long term A/B comparisons are not absolute - you just testing if a piece matches your system better than the other.
In my opinion comparing analogue with digital in the same system is unfair - you are just establishing if this system is optimized for analog or digital. Unhappily I never saw a system optimized for both, the best analogue systems I heard were a disaster with CD and the best digital ones were un-interesting with vinyl.
