ZuPreem Fruit Blend is well liked by many birds and is generally accepted as better than an all-seed diet. I used to feed as part of my flock's diet and had concerns for the high sugar content and use of unnatural dyes. None would accept the "natural" or vegetable varieties.
I eventually made the decision to transition them to Harrison's by following the manufacturers conversion advice. Worked like a charm! Curiously, though they hated other drab colored pellets, they soon loved Harrison's. (high potency and adult coarse pellets are a neutral clay-like color)
IMO Zupreem is an acceptable part of a diverse diet, and superior to many poorly constructed seed mixes. Moistening makes the pellets more palatable, but greatly reduces "in the bowl" life.