Agreed with four, one is better, but if between 5 and 10, get 5. Obby maulers are good because they can hit high at low combats, so may aswell stay low combat.
i think 50ish range (depending on what lvl your getting str to)
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how much attack exp does the climbing boots quest give? if its under 10 you could consider doing that for the +2 str boots, but i got a feeling its 13 atk or so.
If you want to train up your range, get 10 attack.
If not, just stay 1 or get 5.
With 10 attack, you can get much higher range so you can knives to obby maul combo.
rofl, throwing knives are for the 'ranged' skill so of course attack doesn't help you with them. 1 att 60 str 60 ranged is an ultimate combination with mith - rune knives & obby maul.
if you go above 1 attack you are a complete fail..