One week of my 30 days trial period has passed now and i added a lot of personal information.
It seems very usefull but it's not really cheap.
Anyone who's already used this or a previous version and can assist my final decision?
It really comes down to what you use it for. Personally when I saw the below pane note section in the preview video, it just didn't compare to Compendium's multipage built in text editor.
Of course, if you're an indexer this becomes moot since you can just index your documents and text files to it and it would just be the same but Compendium can do that in a slower and less prettier but free interface.
The biggest problem I would have if I were going to buy PersonalBrain is stability as both have their problems when you check in each respective site's forum and unfortunately these types of programs require stability because it's a pain to lose your brain. Also Compendium is probably slower because it's java.