Note Taking

I'm still trying to find the ideal note taking tool that can hold all my thoughts together. I tried TiddlyWiki for a while, until it lost two separate sets of conference notes (despite a rigorous saving routine), and am now having a fiddle with Google Notebook - which looks like it is great for online research, but very specific to that. But I was surprised that I had never heard of Microsoft OneNote, which looks like it could be very useful in the MS environment which exists at my workplace. Think I'm going to download the trial version in a couple of weeks and see where it takes me...all good for personal knowledge management.