Clonazepam is both the best and the worst med i tried...
While it vanished my anxiety within 15 minutes the first time i took it, the effect became less noticeable after two to three weeks 1mg/day. So i decided to quit, but even after those two weeks i had withdrawal effects on top of my normal anxiety. When i decided to taper off (from 1,0 to 0,5 to 0,25 to nothing in three weeks) it went better, but the two weeks weren`t worth the withdrawal for me.
I`m going to try fluoxetine now (also for depression).. I know this is also a bad drug to withdrawal from for some people (although not as bad as benzodiazepines), but at least it shouldn`t produce tolerance that quickly.