I've grown the auto ak47, white russian, and diesel ryder.
-Yield is fine acceptable, as long as you plant the seeds directly into their permanent home. I've averaged around 30-40 grams per plant.
-There is definitely a distinct ruderalis taste, it's kind of perfume like, also what gets me is the smell. Every auto harvest I've had ended up with a strong cat pee/ammonia smell. My normal non auto harvests smell and taste great.
-potency is great, I've only gotten high potency results.
So, the only bad thing in my opinion is the smell. It smells great in the jar, but once you start to break up a bud you get that smell of ammonia. I've told myself that I'll never grow autos again for this reason. It's still really great pot, but I'd rather put a little more time in and get a great tasting and smelling experience.