EXACTLY what he said ^^^^^. The size of the buds will blow you away as well as the high. If I were to ever want to grow and sell, I would start with Serious Seeds Chronic.
Chronic is great - best smoke reports of these three strains - , Big Bud has won a CC but all the reviews I've read said the bud isn't potent. Take a look at Heavy Duty Fruity by TH.
[FONT=Arial, Helvetica][SIZE=-1]Height: 120-160 cm
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[FONT=Arial, Helvetica][SIZE=-1]Yield: 400-600 p.s.m.
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[FONT=Arial, Helvetica][SIZE=-1]Flowering Time: 60-65 days [/SIZE][/FONT]
One Word "Monstrous" will describe this plant. A huge producer with giant cola's will make any "bud waver" happy. Absolutely the best indoor producer we have seen yet. Ideal for planted method 20-30 p.s.m. But beware we don't call it heavy duty fruity for nothing, this plant smells Strong! So air cleaners or ozone generators are suggested.
[/SIZE][/FONT] http://www.cannabis-seeds-bank.co.uk/t-h-seeds-heavy-duty-fruity-3137-p.asp
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Columbian Skies by Dr Greenthumb is advertised to yield 4 - 4 1/2 lbs in favorable condidtions and be very potent.