Hi
the feeding schedule is an advisory more so in the public aquarium field where vast quantities are being fed. For us to bring to the market both types it would make for some a bit confusing so we opted for the platinum only that has the enhanced health benefits. The price is the same also.
If we saw a demand for the standard marine builds we would bring it in.
As for other pellets most are baked to a rock hard pellet unlike Vitalis. I would take a look at these videos, both of equal importance.
Vitalis Vs Hard pellets
https://www.youtube.com/watch?v=TNJXl-OgYZA
frozen Vs Vitalis
https://www.youtube.com/watch?v=RnnUWOVcDrU&t=3s