I found this post on Reddit (https://redd.it/6ju5b3), thanks to /u/Hazelmere0 and I can confirm Turoths are worth camping if you want AFK Farming exp. Having Demon Brawler + Caroming perk is amazing here. Compared to Aquanites, this has lower requirements and requires a lot less effort. If you compare tree farming, it's not really worth it unless it's a limiting factor or you're struggling with money.
Royal Crossbow is the highest damaging weapon against Turoths. 2nd highest has a few options like Slayer Dart or Leaf-bladed spear. Slayer Dart unfortunately caps at T50 damage despite T85 Staff of Darkness working with it. Farming exp rates vary so I was getting ~140k exp/h.