I have tried Klonopin (clonezapam spelling?) and ativan (lorezpam spelling??). Klonopin is strong and long acting, but makes me a bit dizzy at time. Ativan is good..It all depends what you are using it for....short lasting anxiety, anxiety over the day? Ativan is good for anxiety, problem is you have to take more of it if the anxiety is over a longer period of time. But Ativan is "ligther" in side effects (well just a little drowsiness) but that just me..people have different reactions. For sleep, ativan is better. If you have panic attacks I highly recommen Klonopin waffers (they disolve in your tongue) work FAST under 20 minutes and you get long relief because of it's long have-life.