Hi, I'm looking for the best office document search tool that's out there. Windows search works well if you know exactly what you are looking for, Google Desktop has been deprecated, Copernic seems well liked, and Aikin HyperSearch claims to be the best (able to find stuff when you don't know exactly what its called... very google-ish). I would love to hear opinions from people who have actually used any or all of these before I make the plunge to spend the $. Free versions are ok, but I'm looking for pro versions with all the bells and whistles.

Thanks!