You're very right, different brands of thyroid all feel slightly different.
125 mcg T4 and 25 mcg T3 is a 5:1 ratio, I don't think that is suitable for everyone. Glad you've found a working dose for you though!
Yea, so many years of trial and error to end up at that, I can say though that results with taking thyroid hormones are 10 times better when following a peat diet, it's night and day. Good luck OP