i would also recomend any of the ones mentioned. i've used the attitude bunches, dr greenthumb has some bombass genetics, but tend to be a lil steeper at around two bills for ten femed beans, but well worth it imho..
sannies gear is so cheap you think it can't possibly be as good as it is, but you would be wrong thinking that.. sannies gear is mostly all fire.. i've grown his herijuana, which is what i would suggest to the op, and his chocolate rains, and i'm growing his blueberry x chem dawgs right now, and everything has been top notch bud for sure..
i personally would stay away from nirvana, although i do hear some people have good grows with their gear, but to me i would rather just spend a lil more cash and get something that i really liked...
i've also used sow amazing, sensible seeds, bcbud depot, and maybe a few others, but all of the ones i've mentioned i've had good results with and got what i paid for..