Armour vs Erfa (never-ending story...)

I would appreciate input from as many people as possible:

I have seen two doctors in the past year. One only believes in Armour, the other one will prescribe Armour or Erfa, depending on the patient's wishes.

On 30 + 60 mg Erfa pills, I felt well, slightly hyper maybe, but well, but I suffered from terrible itching, so I switch to 125 mg pills. I felt they were somewhat weaker, so I had to raise the dosage slightly but, on 4x125 mg daily, I feel great (on less, I feel suboptimal). These are my latest labs, 24 h after taking any meds:

TSH <0.001

FT4 1.2 (ref 0.7-1.7)

FT3 3.9 (ref 2.2-4.2)

The doctor who only believes in Armour wants me to switch to it. So, my question, primarily to those who have tried both Erfa and (reformulated) Armour, is: in your opinion, would 7.5 grains of reformulated Armour lead to the same results as 8 grains of Erfa? Or should you always stick to the drug that normalized your labs and made you feel normal...?

Thanks,

Anna