Same as you with Xanax: short-acting, but has more of a "punch."
Klonopin sometimes makes me a little more tired for my liking, but the fact it lasts long has its advantages. When I have days where I am worrying a lot, it helps slow the thoughts down enough to get through the day, most of the time. Sometimes it does have an opposite effect where I am more irritable, but its usually as a result of it making me too tired and groggy. Ativan feels good, makes sleep more peaceful when combined with an AP. It's also good during the day, but like Xanax, it wears off fast.