Dubias are nice & odor-free...escapees die & shrivel up, as mentioned. I really like the Orangeheads for their sheer breeding capacity, but they do have an odor (only when disturbed)...smells like a locker room after the Superbowl...but still nowhere NEAR as bad as crickets. Discoids are pretty neat...very much like Dubias, except the nymphs are mosaic-patterned...they smell like an ashtray when disturbed, BUT, they NEVER escape. Ivories are nice, pretty roaches, also never escape and don't smell, even when disturbed. However, they need a substrate which includes hardwood leaves. Not bad if you want to display them in a tank of some sort, but makes finding smaller nymphs just about impossible. Turkistans (B. lateralis) have a tendency to escape and live for a little while outside their box (especially in summer), but they can't breed in the house because of the lack of humidity. Hissers are a perennial favorite, possibly because they lack the "classic roach look", but they do have a slightly "twangy" odor, an of course, they get HUGE.
The only "feeder" roach I think I would stay away from is the Lobster roach. Those escape easily, live awhile, and are just WAY too fast to be a good feeder. (I have good reflexes, but those suckers are just too fast for an old woman like me!)
Anywho, I hope you can convince the family to change their minds. My hubby was exactly the same, until he got truly good & fed up with the constant cricket smell & escapees all the time!
Now, he loves the roaches! Even encourages them.