I don't use supreme, even though they have great human grade ingredients they add sugar to the mix and it's not a true pellet
Actually, I would definitely consider it a true pellet. Although it does contain some sugar, it's way down on the list by the vitamin and mineral supplements, and the nutrtional profile is balanced and guaranteed. That small amount of sugar doesn't bother me particularly. Sugar isn't evil, TOO MUCH sugar is bad.
OTOH, I don't consider TOP (totally organic) a "true" pellet because it does not contain any vitamin or mineral supplementation, and therefore can't deliver a guaranteed nutritional profile. I think it's a good "convenient whole food" and I've used it mixed in with other things in my dry mixes, but it is not a pellet in the sense of a product that has been manufactured to, in essence, deliver the equivalent of a multivitamin and mineral supplement as well as a certain balance of carbohydrate, protien and fat.
We've been feeding Harrison's and Zupreme since we brought the birds home many years ago. I found they wasted the Fruit Blend Zupreem, and they REALLY prefer the Harrison's. to the point of emptying their dishes to make sure there's no in there. So we ended up just feeding Harrison's.
You are lucky. I think Harrison's is generally considered the "cadillac" of pellets, but mine have never taken to it.
If you like Harrison's why not just have it shipped to you?
I think they changed their policy and now you have to get it through a vet. Did they back off from that? It was the case about 6 months ago.