I've taken Ativan as well as Xanax but I have not taken Klonopin. I've had good luck with both Ativan and Xanax. The Xanax definitely seemed stronger to me so I starting using Ativan instead. I take it occasionally for panic attacks, anxiety and trouble sleeping. The only issue I've had is that I seem to be developing a tolerance to it. Its been taking much longer for it to work and it doesn't keep me asleep for the entire night anymore. I take it so infrequently though so it doesn't bother me too much. If i needed to take it more often, I'd probably speak with my doctor about possibly upping my dosage. Ativan and Klonopin are addictive, so I would talk to your doctor about your feelings on that matter if you are seriously considering taking something like this.

I hope this is of some help to you.