Regulars are technically the stronger plant, but you have to separate the males and females when they start to sex. Males usually turn first. Fem are good genetically but can be sensitive you environmental changes causing them to self pollinate. Auto I think are still unstable, still having to introduce genetics to keep her auto but great for a small space and perpetual harvests. But I never have much luck with autos. Always seem to feed them too much. I hope this helps, good luck