Best place for red chins?

Ok im going to use red chins for range training, and I need to know best place for red chins, I have 70 def and 52 prayer, but I dont have mm done, so where is a good place to use them to maximize the xp im getting?

 

If you really want to get the best xp, do monkey madness, or atleast up to the point where you have access to the tunnel. If you won't do that, the best place I can think of is the Chaos Tunnels, but even there the difference in xp is very big in comparison to the MM tunnel. It is worth it to get to the MM tunnel.