Xanax has a very short half life in the body...so if a benzo works for you, having a longer acting type like Klonopin would be a better choice.

Benzos work on GABA receptors which are involved in inhibitory neurons to dampen activity. This is why they are used post seizure...during the postictal phase of seizures. They may help the dystonia in a similar fashion. The side effects of benzos happen when they WEAR OFF in the body. I've seen some psychiatric patients tremor severely when they run out of their Klonopin...once that drug is used, there will be rebounds like this. That is why the longer acting benzos are better. In patients using long term high dose, they can even have a seizure, when previously they were not seizure prone.

But be advised...they are double edged sword, and very habituating.