I'd kind of echo Rohag's thoughts. I took Ativan in early days but didn't have a really strong effect but at that time my anxiety was set to 11
I think that otherwise it would have gone as R's experience did. Too much, too soon, and not long enough. I've used clonazepam for a long time. It works very well. It seemed to have a longer effective duration in the beginning. Now I suspect I keep it around as a security blanket more than anything.