60k combat xp is terrible Compared to what? Zombie monkeys? Armored Zombies? Then yes, it's terrible, but are we talking about greater demons v. other combat methods? No. We're talking about greater demons v. other slayer tasks. So when you consider that the average slayer xp/hour is 50k, well, is 60k good or bad? I'm not sure where you're getting your numbers, the only tasks that can hit 50k/hr are Dags and Bloodvelds (the latter barely). In Zarfot's guide he says he can get 21k/hr at greaters with piety and maxed stats under ideal conditions. I don't know of any slower tasks besides metal drags.