Klonopin versus Xanax

A few times a year (including today) I feel like my anxiety is sufficiently acute that I need to take a pill to calm down.  I do not have generalized anxiety, social issues or phobias, but instead anxiety tied to specific events or concerns.  A typical situation:   Something happens, I get very worried about it, I beat myself up over how I handled it and how I could have done it better, worry about consequences, and then I can't think of anything else -- the worry is with me all day.   Those are the situations in which I feel like I need to take a pill, to get a little bit of relief.  The relief is temporary, of course, but even a few hours being "anxiety free" is a gift. 

I do not abuse this.  All I take is one .25mg Xanax.   I am VERY careful not to let this become a habit.

My question is, for my type of use, is Xanax a better choice or should I try Klonopin?   I know you all are not doctors, and I am not looking to you for medical advice, but for those of you who have tried both of these medications, on a prn basis, how do they differ, in your experience?

I realize Xanax has a shorter half life, and so quicker on and quicker off -- but other than that, how do they make you feel differently?

Thanks! 

Medved, the only drug I ever used was xanax and I used it as needed and really in the beginning I would lay
myself out with it. It took a while for me to realize that I could body slam panic with half a pill, once I got
to this point it helped a lot, what I liked the best was the speed of panic shutdown, same for anxiety. I
wish you luck with this med. I think its a good one my wife uses ativan due to the longer half life. Peace

Larry ***