ok i dont know alot on the subject. i do know auto's are less potent. thats a disadvantage. they also yeild a little bit less than a regular but that all depends on how you grow out the regular sometimes a auto can out yeild a reg given the situation and how they are grown so there are variables there but in most cases a reg will outgrow a auto.
if you plan on keeping a perpetual then autos are not a good choice as cloning them is difficult if not impossible, whereas 1 reg feminized seed can produce lots of clones and from them clones even more clones, given the right circumstances you can setup a perpetual and harvest 50 plants every 2 weeks (this woould take a long time to get to that stage) just off one seed.
if your just looking to start>>>finish from seed in a short span of time then autos are the way to go but if you plan on growing continuously then i wouldnt recomend feminized autos as you will have to keep buying expensive packs of seeds. instead get a batch of 10 reg autos pick your best male and female and seclude them in thier own little box and let them hanky panky it up, then you will have enough auto seeds to last you a few grows, only prob will be they will be regular so you will have to ditch the males every time. but with autos they show sex after about 3 weeks so this isnt such a big deal. you can grow them for first 3 weeks in a 1 gal pot once they show sex dump the males and repot the females. then start up X amount of seeds where X is the number of males you just trashed (or hashed)
if you want big plants and high yeilds and want to play around with LST, topping, FIMMing and suppercropping then regs are the way to go and unless you plan on breeding go feminized because theres nothing worse then vegging and training a male plant for 2 months..
autos are cool to grow i have one in my tent and im going to germ another today. but they are just a side project to my photoperiod plants. which is always another option. grow out photoperiod plants and pick n mix a few fem autos to play around with while you wait for other plants to get where you want them to be.
hope that helped a little bit and isnt just some nonsense babbling lol
Matt