Blue Diamonds....which ones ??

Hi folks,

Was paying a visit to our dear ADR ebay stor this afternoon, looking for some tips but was pretty confused by the amount of tips named "Blue Diamonds". To me there had always be one single brand using that name but now I can see Brunswick, Cannon, etc. using also that title.

So which ones are the real orignals??
And alos, how would you rank them to standard Elkies? there supposed to be similar but....now?

Thanks!

Blue Diamonds....which ones ??