You get what you pay for. NRS is CHEAP and I highly recommend it to any grower who wants to sort through a packet and choose the pheno that best suits his grow area. I had terrible luck with their White Rhino in general, hermies, ugh, but got one individual ou to fthe pack that was so stellar that it became the stud in the Rhinofuck cross.
If you grow NRS, CLONE FOR SEX and keep your mothers, because you WILL find phenotypic variation in some of their strains. The Pure Power Plant won't show any though, as it is an IBL.

My current selection of NRS plants includes:
Skunk#1 male
Pure Power Plant female
Hindu Kush female
Papaya female

If I had to recommend one for noobs looking for trouble-free huge yields, get the papaya. Seriously. But keep your humidity down because football sized buds mould like a right bastard.