Would stick with synthroid and target 0.5-1.5 (ie, increase dose)
I am not a doctor just one who is going thru this thyroid transition also. My doctor started me on 50mcg of Synthyroid. I took for about two months. Doc switched me about two weeks ago and I really feel I am getting better. I also found that my ferritin was low and DHEA was low. So far I really like Armour, but you definately need to change levels with Armour. If you are not feeling better, I think it might be time for further testing checking deeper underlying causes or changing med.
Good Luck!