I don't know much about the superworm except that it's basically the same type of beetle larva. From what I read, they are sold in pet stores as feeder insects. The ones I usually get at bait shops are, as far as I know, yellow mealworms.
I stopped at the bait shop on Saturday to get some waxies but they were out so I had to get mealies instead. On jigs and spoons I did ok. a bass, some pickerel, perch and a few gills. The thing I noticed though was that once a fish hit the mealworm and let go(or I missed the set
), it would very rarely get hit again. I would have to move to a nearby hole and try again. With waxies, if I missed a hit and dropped it back down I would almost always get a second hit. I don't know if it was the texture or the taste but once it got tasted, it seemed like all the fish in that area would snub it.
If I'm fishing for trout with mealies, they are all over it. I could work a gnawed on mealie and get hit, time after time until the worm got stripped where sometimes trout will snub a waxie.
If I'm after trout I'll use mealworms first. If I'm after panfish or bass, I'll use a waxie.