serious and sensei are really well known for being very good i dont knw about my g13 plants werent that great g13 nirvana has both good and okay and some bad if money isnt a problem i get both sensi or serious if moneys tight get nirvana but ur going to have to weed through and see which plants turn out the best had several nirvana lots of males had a hermie some seeds didnt germ and had one really great plant and one good one but i would definately put money into serious or sensi