I poped a pack about a year or so ago, had 9/10 germinate but one was a twin so i ended up with 10 plants anyway, 6 males 4 females. Really stable genetics, had two pheno's and of those three of the plants could have been clones they were so simmiler. Quality was exelent, very stoney with good resin production there was so much you could actualy scrape it off with a knife! I grew mine natraly no topping, they were very easy to grow with a pretty good stretch the first two weeks of flower. Fairly pest resistent too, i was battling a minor mite infestation at the time and they didn't seem to interested in the JTR but just loved my Querkle's.
All in all on a scale of 1-10 i would give it a solid 9 at least, maybe even a 9.5