ok everyone has suggested slayer, i have 85 slayer on my main account. I am after the fastest possible exp with my stats. i don't particularly want to be wasting my time on stuff that isn't good exp like i dunno fire giants with dogs attacking me in the karmja cave, I havent done waterfall quest. and perhaps in the time saved getting a new task would i get more exp just killing spiders?or would a black mask make up for it? i'm also not doing summoning and i have 1 prayer