I have the same question. I fed my beardie phoenix worms as his staple, but they were getting to be too expensive and dying off to fast, so I moved over to superworms. The store said supers are okay as a staple and I give him 6-7 a day, with veggies.
I have found he is gaining some weight, but he was a bit under weight before.
Should I be changing back to phoenix worms, or just switching over to wax and silks in between?
Thanks.