Crickets are easy to breed, they lay thousands of eggs, I don't have a lot of trouble breeding them it's just that they are a lot of work, you can't forget about them for a week or 2 at a time like you can woodies, they'll all die. You constantly have to separate them out according to size as they grow as they will devour any crickets smaller than themselves and or the same size as themselves if they're overcrowded and food isn't available. Breeding and raising crickets is a lot different to woodies, start with 30 woodies, end up with 5000, start with 5000 crickets, end up with 30. LOL Crickets lay eggs whereas woodies give birth to live young. Crickets are cannibalistic whereas woodies are not, woodies live for 12-14 months, crickets live for 12-14 weeks, woodies are silent, crickets as I'm sure you're aware chirp... relentlessly... Nutritionally as feeder insects woodies are superior to crickets simply because they will eat absolutely anything and everything, crickets are a lot more restricted in their diet. The only reason I actually breed crickets is because I prefer them as feeders for my Tarantulas, scorpions and centipedes and if I'm too lazy to tong feed my green tree frogs woodies, I'll throw crickets into their enclosure. Woodies will just scurry away and hide and get to places in the enclosure where the frogs can't get them whereas crickets will happily roam about in the open chirping away until they're all gone. Crickets move a lot more than woodies do, I mainly use woodies for all my turtles and crickets for everything else.
My cricket rearing tubs are just layered with an inch deep substrate of raw oats, and I feed them fish flakes, ad provide either carrot, a piece of apple or grapes for moisture and pieces of egg carton for shelter. Unlike woodies, crickets HATE being on the ground, they will avoid it at all costs if they can.