The best options are what get you to your end canopy goal with the least amount of wasted growth and resources.
This varies by context.
With an autoflower, i wound't do much training. Keep it spread out and it'll take care of itself. These plants are generally small and excessive training won't help much, if at all. Maybe some lollipopping of lower branches is worth it... but the timing would be important too.. before buds start forming being best. Also, les is more for lolipopping an auto.
You may wnat to grow it out naturally to form some baseline (and a few more plants too) .. then try training them and better recognize if it even helps or woth the effort. I'd still do some light training to spread growth out, of course. Nothing wrong with angling branches to absorb more light.