Flutoprazepam is controlled and it's not an RC, Flutazolam sounds interesting but I never saw a single vendor selling.
Yeah, Diclazepam is the safest one, also Deschloroetizolam is pretty safe.
If I was you, I wouldn't get near the RC scene, because they're legal and low priced, things get out of hand so quickly... Try to get Rx benzos, as disappointing as this might sound, it's your best bet.
SWIM