it all depends on your experience. but there are some beginner friendly breeds. stay away from nirvanas auto's they are inconstistant.the lowryders are good to start. I also strongly suggest royal queen auto dwarf.or royal auto. Good price great yeild and good effects. they are very light dependent. with proper root space and alittle tlc. they are the best for the price. average 1/2- 1 ounce per plant.dinafem road runners are easy as well thick cola. there auto haze is another. but growing it seems alittle more tempermental then other auto's. lowlife ak auto's more money but quality yeild .remember you get what you pay for. but i must repeat and say royal queen seems to be the best deal for a auto grow. depending on how many you need.