What is the best screen recording software to record World of Warcraft with?

I was going through the same problem as you yesterday try zdsoft screen recorder. Thats what im currently using. It cost money but you can sign up for a free 30 day trial. Its kinda laggy but still good to me. Here you can watch a video i made with it on my pc. http://www.youtube.com/watch?v=acO-9sTKSQ8