Please don't flame me for this, it is just an observation but:
People keep on about the fact that OS4 is not available yet, but I can't buy MOS for my A1200PPC either.
MOS (at the moment) seems to only be available with the Pegasos, which seems to be in as short supply like the A1, and I assume the PPC'ed "Classics"; just as OS4 is only available to PPC "Classics" and the AmigaONE.
I suppose all I am saying is: is there any real difference between the two in terms of availability? Is one really better then the other? 8-)