It's meant to be a re-worked big bud [ie, they got aload of big bud, grew em all out, picked the very best and kept back crossing to make another stable version of big bud that is supposidly slightly better than the original.
I wouldnt trust it completely though. Never trust completely what seed sites say.
Thanks Ganjman ... hard to find a supplier of Critical Mass ( one that's in stock) ...any ideas what seed banks to look at that keep a healthy stock ?... and I don't want to go to any auction sites.. they suck.. I want to buy the seeds outright. ... thanks.
ive seen it at dr.chronic in stock and not overly expensive either. id definatley go with critical if ur deciding cause mr. nice has decent genetics i think their pretty legit.