lol the only times I've tried autos were, first...
Nirvana's offerings, I got got one of each of the Jock Horror, Bubblelicious and Northern Lights free in one of the tudes promos. So I put them in thinkin I'd get a quick round in and..... lol they didn't flower auto I had to flip 'em (tried everything nirvana advised on their site too), they went for over 20+ weeks from seed to bud, JH & NL grew to over 6"ft (inc pot) and were piss poor in potencey as they didn't have any affect at all!?
My 2nd go was a Red Dwaf (again a tude freebie) that cracked in 24hr and gave birth to a mutant "thing" lol, looked like a wort on a stem lol. I just binned it off
.
My luck both times there put me right off autos and when I had other seedlings doin fine at the time. I put that being down to it being just a bad seed lol, as my cuz has a gorgeous Diemos plant goin atm from the freebie seed I gave him that I got along with the RD.
Not the best experience ever but it put me right off bothering with autos again. I may think to use them for a quick outdoor grow though as I think thats where their real use lies tbh