i will say this if you pay lots of money for top quality strains you generally get top quality results in most of your plants... if you use lets just say nirvana knock offs(which i am using right now)you will get a large variety of phenotypes...but if you grow all the plants out and choose your mother wisely i can almost guarantee you will get some great genetics.. so the question is what do you have time to pick some good genetics for 25 bucks....or the money to buy almost completely consistant genetic similarity....i am a cheap bastard...so i take my time grow em out clone em all...bud em.see wich ones grow great, clone easy, mature early,but most important who produces the mostquanity of thc.... then cure em and see which has the best buzz ,taste , length of buzz,and ceiling for tollerance the best i call mom...i keep that clone for motherhood grow out the rest of the girls and smoke good weed until i got a room full of great weed. takes about 6 months from seed..