Well, depens on what your task is in your team. If you want to hit high, so maybe an instant KO, choose a Rune Battle Axe with 50 Attack and 75+ Strength. If you want to hit medium, but fast, train your Ranged to 75+ and bring addys. Armour is all yours, I had 60 Defence and I wasn't hit very often. So...yes, defence is worth it.