as far as yields go i would look into the newer super autos. they take longer but put out massive yields. as far as potency a lot of breeders websites are misleading. there is little consistency in testing. i've had strains i've grown test both lower and higher than the breeder's claims. a lot also depends on how long you flower a plant and how long it is stored before testing. lot of variables at steak here.
in case your not familiar with super autos it is just a normal auto crossed with your typical indica/sativa. so its only 25% ruderalis instead of 50/50. has traits of auto flowering but takes longer.
i've grew and smoked a couple different auto strains. some had good flavor and were about medium in potency. never had anything special though. all my indicas/sativas were more potent it seemed like.