IMO, I think those u bought are compilation cds which are sung
by unknown ppl produced by unknown companies. I believe the
question is about cds by original singer, under the same production
company, but different marketing company ie those from China. These
cds are meant for the China market, and hence it's cheaper,
although it's still original, ie not pirated. I've bought some
before and they're ok to me. I believe their recording/songs should
be the same - cos it's digital and the singer only records once.
However, the durability of the cd might differ, that I'm not sure.
But from my experience, they've no problem.
Of cos, due to different marketing companies - S'pore vs China, the
freebies may be different. But for a practical person like me
whereby the songs are more impt than those useless freebies, I
don't see why I should spend 2-3 times more. Moreover, they are not
pirated copies.