Lets see.....
Leslie: The aspects of Flat Earth I think are best summarized in a treatise that Robert Harley wrote for Sterophile about 10 years ago. Don't know the exact edition, but I'm sure there are others out there with more exact information.
To summarize: Flat Earth advocates pace, rhythm and timing (frequently referred to on the Forum as "PRaT")over soundstaging and imaging which are considered artifically created artifacts of music reprodution. Round Earth is more or less the opposite. Round Earthers often refer to Flat Earthers as Luddites.
Naim, Linn = Flat Earth
Krell, Levinson, etal = round earth
Do a search on the Stereophile web site and I think you'll find it.
Paul: thank you for the timely update. Despite the rancor that seems to go on endlessly on the Forum I would like to say that I appreciate the attention that Naim provides its customers. This, along with the quality of you product has kept me loyal. There is no other manufacturer that provides this level of service to my knowledge. I will await further word.
JWSzuhay: Glad to hear you like Mana. It's a personal thing you either like it or you don't. You're next step is stage 4 for a similar improvement. I've found that the CDS1 to be one of the sources most improved by Mana.
Cliff: I don't beleive that the Forum censors the word Mana. Asterisks are not needed. It's not a curse word afterall.
Arthur Bye