Studio XPS 7100, CPU upgrade

Good morning to the friendly helpful Dell community. 

I don't know what I'd do without the people on here. I have a Dell xps 7100 and im looking to upgrade my processor.  I do alot of editing and multitasking and would like to ask what is the best upgrade for the KA1030 DRS880M0 Socket AM3 AMD Motherboard? There may be alot of this subject but I have a headache on finding what is the best one? Could any of you lovely people please kindly suggest to me which is the best processor for this motherboard? 

Thank-you, 

kindest regards, 

Anoop.