Breeding brown Crickets
Image from livefoodsdirect
Gryllus assimilis, or brown crickets as they are more commonly known are almost a cross between black crickets and banded cricket; they have characteristics from both. Brown crickets are favoured by many hobbyists because their chirp is very quiet (earning them the common title of silent brown crickets). They are more 'jumpy' than black crickets but much less so than banded crickets, brown crickets are generally quite terrestrial and not as agressive as black crickets (although any hungry cricket will show agression).
Brown crickets are readily available online (I haven't found any online livefood store which doesn't stock them) and can usually be found in specialised pet shops.