i hate crickets. I had crickets for 5 days before i ordered my roaches. Now, i have self sustaining feeders and dont have to buy anymore.
Dubias are the species I have. They can't climb smooth surfaces (glass or plastic). There is no smell, they don't make any noise. They dont die often at all. I can count the number of dead roaches I've found on one hand and i've had my colony going for almost 8 months.
I did do the mealworm thing. I found them good but i couldnt get the calcium powder to stick to them very well, and i didn't like the chitlin ratio. Now that I've switched to roaches my leos are growing great and i offer them to my other geckos as well. Most people offer them in a dish with calcium powder to get around the non stickyness.
My other biggest problem with the mealies was that they died. Granted, i kept them mostly out of the fridge. I'd give them carrots and gutload them but i experienced enough die off to turn me off from them except for the occasional few hundred to vary things up for my leos. Its not recommended to feed them to cresteds which is the other reason i dont do much with them.
My leos are CRAZY movement driven. I can hand feed them non moving items, but i'd be using up waaay to much time to hand feed them all every other day.
I also have yet to have a mealworm escape, or at least one that I didn't drop lol.