All the tools you need for power-slaying: Proselyte, fury, zerker, slay helm, b gloves, dragon boots, whip, Z spear, rune defender, fire cape/sw cape and karils top & bottom. With these items in your bank, you can do pretty much any task there is and do it fast. Although some levels are also required, like: 90+ herblore for extremes, 95 prayer. I think it sums it up. Personally I have never owned an sgs for slaying and I probably never will. I turmoil all of my tasks and when I run low hp, I soul split it up. Guthan/SGS are so 2008.