I was diagnosed withe hyperthyroidism 6 years ago and i've been on synthroid (thyroxine) every since. would you recommend armour since it has t4?

No but . . .: I suspect you're diagnosed w/hypothyroidism which is under active thyroid. Either that or you had over active thyroid that was treated, leading to under active thyroid. Regardless, standard of care is levothyroxine (t4). Many recommend sticking w/single brand (any one will do) to minimize variability. Armour is dried pig's thyroid containing t4+t3. Most will convert T4 into T3 (liothyronine) just fine so no need.