I would have to say my problem with roaches comes from living in Boston, where two apartments I lived in were infested with them. I have no problem with crickets or flies. I'm happy to be in a small town in CA now - no roaches in the places I've lived.
Actually what I meant by Sphagmomantis was Sphodromantis, especially the viridis, or lineola. Sorry for the error - I'm still new at this. I'll check out the classifieds here and see what's being offered. Thanks for the suggestions!
Ah, ok I understand the roach issue. I'm in the same boat and don't keep those myself, although I keep/culture five different feeders.
My wife tells "horror stories" of roaches climbing on her nose/face when she slept at a friends house when she was in elementary school. So I gave up on ever trying to convince her to let me have them.
If that is the only concern on why you don't want a larger mantid species you may want to reconsider. I have kept (and have a few left) of the larger species as well in the 3"-4"+ size and they are just fine without roaches. I feed my large mantids crickets (a staple feeder for sure) and other insects like wax moths and the GB/BB Flies - without issues and not a single roach anywhere.
If you want to try a larger species, that will open up a few more species that are great for beginners or keepers of all levels - such as Griffin mantises (Polyspilota Griffinii), Double Shields (Pnigomantis medioconstricta), the Giant Asian mantis (Hierodula sp.), some others like the African mantis (Sphodromantis sp.), and the Rhombodera species in particular. The Rhombodera species is called the companion mantid (and the only species I heard ever called that). As once they are tamed (handling them by you often, daily if possible), they act like a pet dog/cat more so than any other species - demanding your attention, wanting out to sit on your shoulder (will even watch TV), and much more. It's funny to hear stories about them on the forum and online.
That said some keepers prefer the smaller mantids, while others want the larger species. I myself actually prefer the smaller species from all the ones I've kept so far - as I find the smaller ones tend to be more friendly, active, and interested in being handled.
Although they can be at times like a little fearless Chihuahua, running and jumping all over the place lol. The larger species tend to be more relaxed and just like to hang around.
So you might want to try a smaller species and a larger one yourself eventually, that way you can decide which you size you prefer too. Then you can concentrate on finding the "one" favorite species, which will just lead to the collectors mentality though with trying as many as possible and finding many favorites.