Timing chain advice, split roller or solid

Bewy said
I am surprised to hear that Iwis chain uses split rollers. Must be a lower grade than their premium grade.

Rolon chain. I have one here you can have! Been sitting in the cupboard ever since I saw Made in India on the box.....

I'm wondering how to know if I'm purchasing a timing set with the premium chain. No mention of roller type that I've seen on Summit for instance. I'll have to poke around. I miss when things were easier!