Personally, I've been using Enterprise Library for a number of our clients and I have yet to use ELMAH. Here's my thoughts on Ent Lib.
ELMAH is simple, easy to use, and easy to implement. EntLib is big, "enterprisey", and powerful. In your case, based on the little I know about your situation, I would hesitate to recommend anything.
However if I had to pick one for you I would say ELMAH for the reasons stated.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.