For beardies I use both dubia and discoids. I am always expanding my colony on them just to keep up. I rarely if ever use crickets except for baby viper geckos(pinheads). The companies mentioned above are both great companies to place your order through. Just remember to give them time to breed for you before you start really using them. I gave mine a good 2 months to breed and build up before I started using them. Once they really got on a schedule and I started making new colonies I rarely if ever have to order new ones to keep up the feedings.