If you have a benzo addiction problem, then Clonazolam would probably be a terrible choice. Like Scotchy, I am a very big fan of the stuff, even in comparison with illegals. It provides the typical benzo confidence/arrogance and has a solid sedative kick to boot. It has a decent HL value, too, of ~10-18 hours so it's fairly solid all round.
IMO/E Deschloroetizolam is almost purely anxiolytic and almost useless for inducing sleep, same with Diclazepam.
As others have noted, Nifoxipam (at the correct dose - when it was released there was a massive discrepancy in pellet dosage, though that seems to have faded now) is mainly hypnotic, with little in the way of anxiolysis. The thing I enjoyed most about it was the quality it shares with Flunitrazepam; the heaviness is omnipresent but it is possible to remain awake and fairly coherent for as long as needed, it is possible to just pass out for 12+ hours if that's what you are aiming for, though.