I just got refilled with Northstar this month for the first time and its terrible just like you say. Sandoz has been best for me but hard to get. It’s so annoying that every month my refill brand is random. About to make them change that. I had Mallinchrodt last month which was actually comparable to Sandoz for me. Which was surprising given the reviews. Aurobindo was the absolute worst. Just made me lazy and depressed. Northstar has a similar effect. Also causing high blood pressure and heart rate. Stuff is garbage.