I'm a level 58 pure. I have 61 attack, 64 strenght, 55 mage, 60 range and 61 hitpoints. I also have a Dragon Scimitar. My main question is where should I train? Now that PC doesn't seem that good my only option is Experiments and I need verification that experiments is the best place for me right now. Any suggestions?

I think you need prayer for experiments.

I've been training at experiments....

Fleshies on level 2 of SS are also excellent for training on if you dont have prayer. Experiments are better though if you dont mind getting the 11 prayer.