I think you hit the nail on the head with the quote "For my needs". I am going to concede that there are better breeders out there, for sure. However, most people, much like myself, are novice growers, even though we pull in decent numbers and have several grows under our belt. We still make plenty of mistakes, and have a shit load of fine tuning to achieve yet. With that in mind, Nirvana's strains tend to be pretty hardy and forgiving, produce happy results, and as I am finding out tend to impress the smokers of their bud quite a bit. Genetics play a large roll in every grow, but until I find that Nirvanas genetics are the thing holding me back, and all my skills are fine tuned, I will stick with them. I would hate to spend 100 bucks on 5 fem seeds, burn them with nutes, put them through water stress, end up with hermies, and get poorly grown pot that wouldn't compare to decently grown nirvana bud.
For my developing skill level, Nirvana is just right. For the quality of bud I just harvested, at the numbers I harvested at, I cant complain at fucking all...Yes the grass is always greener some where else, but shit, its not like it isn't green right here.
Im sorry to hear about the ops trouble with them, but honestly its not an issue that you can paint a picture out of. Im positive that if you gave that batch of seeds to 5 different growers, you would get 5 completely different outcomes and reviews. That is why I find it hard to plot evidence for or against any certain breeder. There are impressive grows with shit bag seed, and terrible grows with Super Lemon Haze. There are too many variables to write off something as genetics, hybridizing, seed age, phenos, ect...I think that when people spend a ton of money on "genetics" you end up harvesting expectations. You expect the plant to do this, produce this, look like this, so on and so forth.
Its a living thing, it is far from regulated. Anything can affect it. Grow medium, pot size, nutrients, temperature, light angle, blah blah blah.
The only way you can be sure of anything is to completely redo the grow again. Same strains, same conditions. I would bet you would see different results.
The title to that thread would end up not being "Nirvana seeds are crap!" it would end up being "Marijuana plants vary - Even with the same background genetics"