Yes I also used to feed HH and for years at that with a good average lifespan so it isn’t the worst
According to people who use sunburst there isn’t much fruit but either way not the biggest fan of most the fruit in there either. The preservatives I don’t remember being a big problem and don’t think it’s artificially coloured but does have a bit of added sugar. The variety it offers is the best thing about it, it’s above most mixes you’ll find over there. The vita garden one is a similar mix minus the fruit bits so has less different ingredients, no added sugar either I think so would potentially go for that myself while supplementing it with extras & protein.