There will be no visible difference. The difference will be in the nutritional value of a feeder insenct that is proprly gutloaded vs. one that isn't. Gutloading is something that you will need to do yourself as opposed to trying to find feeders at a pet store that are already gutloaded.
Bruce Top Shelf Herps
1.0 Pastel (Gypsos)
1.0 VPI Axanthic Pinstripe (B-Dub)
1.0 Sable het Hypo (Flat Top)
1.0 Lesser Platinum (Sean2)
1.1 Lemonback (Einstein.Elsa)
0.1 Pied (unnamed)
0.1 Pinstripe het Hypo (Chopper)
0.1 het VPI Axanthic (Vanilla)
0.1 Spider 50% het VPI Axanthic (Serine)
0.1 Hypo (Bella)
0.1 het Hypo (Hooker)
0.1 Cinnamon (Nutmeg)
0.1 Normal (Jane)
I raise my own worms and when Im feeding my geckos I always pick my worms off of the fruit and veggies in their container. That way I know the have a "gutload" of vitamins for my lizards. I also make sure to dust them with calcium powder. Be sure to replace calcium and vitamin powders every 6 months as it loses its potency.