I agree with the Reaper...you will get great uniformity and very reliable results with Mandala...Hashberry i understand is a very high yielding plant...their Kalichakra is suppose to be a knock down drag out and their prices are close to nirvana...Mandala also offers F-1's where Nirvana F-2 which can be unstable and lack uniformity...check out hg420.com and they have a mandala forum with an immense amount of info about their strains from ppl actually growing/grown them...check it out