I've kept leopard geckos before acquiring my azureus, and I have to say, I prefer FFs 100 to 1 when compared to crickets. My cricket cultures always got really nasty and smelly, with crickets eating each other all over the place.
I don't think culturing FFs is that much of a hassle, or too hard (hey even I can do it!). It's basically as easy as getting a jar with ventilation where the flies can't escape, putting some food in, putting some stuff for them to crawl on, and waiting for them to reproduce so you can feed them out and have a constant food supply.
I think they used to feed pinhead crickets, which can grow up to be big nasty crickets that munch on your frogs. I've heard that terribilis can handle crickets, although I'm not sure if they can handle full-grown crickets
I don't think culturing FFs is that much of a hassle, or too hard (hey even I can do it!). It's basically as easy as getting a jar with ventilation where the flies can't escape, putting some food in, putting some stuff for them to crawl on, and waiting for them to reproduce so you can feed them out and have a constant food supply.
I think they used to feed pinhead crickets, which can grow up to be big nasty crickets that munch on your frogs. I've heard that terribilis can handle crickets, although I'm not sure if they can handle full-grown crickets