I love the Trader Joe’s version so much. After tasting multiple other brands, I feel it may not be authentic, as it tastes a little different, but I like the taste better than Mina or others.
I don't know the Mina brand, but I absolutely love the Zwita brand spicy harissa. It's very authentic Tunisian - best I've found in the US to date. You can purchase locally at Z&Z Bakery in Rockville or online:
Taking my first try at cooking with harissa. I see that my local Harris Teeter has the Mina brand, in both mild and spicy. Does anyone have any brand or source recommendations? Or any other advice/experience to share?