Torva. The legs and helm are horrible. A lot of people have complained about it.
I don't really care much about the other armor. However, I'll agree that rune is one of the worst.
I was doing a slayer task, I see an adamant shield, I thought it was something rare. Turned out it was something worthless. Same with mithril platebody. It's too different and way too detailed, I liked it when RS was simpler. Now it's confusing, and half of the times I don't know what armor people are wearing. Before the update, it was so easy to tell what armor is what.