Chronic, AK47 (neither from experience), Northern Lights. There are probably some more super-high-yielding commercial strains. What's that one from BC? Oh - M39 (clone only version of shiva skunk?) is supposed to be a super-high-yielder...Hashplant...many more probably.
i would go with 1 chronic or 2 ak47 and 3 skunk#1. i have a 10 pack left out of 15 seeds on the chronic and it is some good smoke do not let any one tell you different grown organic
and a proper dry and cure and you will be set for heavy yields. there a 3 distinct phenos i
found in my 5 females i grew . one was pin smelling it looks and smokes like northern lights.
one was grape flavored and it will disable you .i got the spins from smoking too much. and the lime pheno its a mix between indaca and sativa. a all day smoke. now these seeds where bought when they where sold in packs of 15. and i heard simon added ak47 to chronic . so you can not go wrong.
ak47 is one of the best all around plant to grow. if you want to impress your friends.
and its very strong smoke with the right pheno you will be in high cotton.
All of the above, then there's Critical Mass from Mr Nice. For big yields you want the medium tall pheno. I's a BIG yielder and finished in 9 weeks or so. The tallest ones yield big, but they take 10 weeks to finish. The shorter phenos took 8-9 weks, were great smoke and average yield. Out of 10 females I had 5 short ones, 1 medium tall and 4 tall. Of the 5 short one there were 3 phenos. All 3 quite distinguishable from each other. It was a bit of a mad house of phenos, but they were all great smoke. Top notch bud from every angle.
rez williams wonder is a big yeilder ,sensi super skunk and skunk#1 both are easy to grow and produce nice big colas its a hard question to answer cause almost any strain will give good yeilds if looked after
northern lights is a good indoor strain that has high yield and the plant has a low smell but good high so its good for stealth its also great for new growers