Mystery snails are not too bad either. Nerites are great, my fave, but some people do not care for the look of the eggs they lay on wood and rocks. I don't care but some find them unsightly.
Mystery snails lay eggs above water, so easily controlled if any eggs appear. You can toss them or drown them, or hope they hatch and sell the babies.
Both snails have both sexes so eggs only happen if you have females. But telling boys from girls is virtually impossible from the outside.