Well ... I followed your suit Michael. I've always been curious what their pellets taste like.
Hagen Tropimix Low Fat Bean Mix - has a natural smell - not sweet smelling. Almost smells like cereal. As for taste, it tastes like a very bland plain cereal. But not an awful taste. This food is almost mixed with fruit and legumes.
Pretty Bird Gold - has a very sweet smell and taste. Taste's better than Tropimix. Tastes like a bland slightly sweetened cereal.
Harrison's - almost odorless and tasteless. It may be a premium pellet, but I can't see parrots really enjoying it.
I'll keep feeding the Tropimix pellets as their primary pellet and add a bit of Pretty Bird Gold - It has Palm Oil and is good for their feathers. But knowing that it has a sweeter taste, I think I'll mix in a smaller amount than I have been.