i tend to agree with stinky,when i use nirvana seeds i am only looking for 1 plant to mother.so it all depends what you are looking for.as for the strains ppp is superb.but take a look at there k2 takes a lot of abuse ideal for a biginer and gives fantastic yields!good luck and keep up the good work.
another seed bank i strongly recommend is paradise seeds very good genetics and good prices.