Querkle has better veg speed, and more sweet candyish/cherry tinged phenotypes, while deep purple is a slowish in veg plant, which can be convenient for some like me. Deep purple has more of the urkle, so more candy sweet grape phenotypes, rare funky smelling grape plants can be found not like in querkle, which are more musky. Querkle takes 7-8 weeks, I'd give deep purple a week longer like 8-9 weeks. Obviously more purple plants will be found in the deep purple, I'd say quality of smoke is even between the two, if slightly being in favor of deep purple on potency.
Idk if subcool still has his males from 2012, but I was growing mostly TGA back then, I grew 20 each, same for ace of spades and chernobyl around $80 a pack it was worth it. Chernobyl is actually restocked at the attitude seedbank, for the first time in over 2-3 years.