Arimidex or Aromasin?

Hi all, I mention my situation. I will cycle the alpha1 (ph), and will use arimistane (erase) like aromatase inhibitor during post cycle. But during my cycle I want to use something AI more powerful, I’m not sure which would be best option, arimidex or aromasin. I would appreciate your opinion!
On the support of kidneys, liver and blood pressure that you recommend? I have liv 52, saw palmetto, Cystone and NAC. Would add something else to the stack?