Passive safety wise goes to Persona/Iriz due to HPF structure is very rigid even better than many Japanese rival.
Active safety will be Myvi, simply because Persona/Iriz does not have ASA to prevent you from forward collision, but the reliability of the ASA is just ok-ish level because it doesn't cover all speed and due to lack of radar might not be as accurate, but still better than none.
Plus side for Proton other than safety would be really good an enjoyable drive compared to Myvi,
Meanwhile Myvi is better in term of fuel economy. I won't touch much on reliability because Myvi is still considered new. Iriz/Persona wise not much major issue as well.
New Saga Adv or New Myvi 1.3L without ASA, Help me, newbie in car.