I've used Copernic Desktop Search for years at home as my local search tool of choice. It's always done well, and has the killer feature that it will search network drives, so my little NAS under the desk, where most of my letters and family snapshots live, can also be indexed. Fantastic.

But then - along comes Copernic Desktop Search 3. A free downloadable update, and like a mug I just downloaded it.
External link: http://www.copernic.com/en/products/desktop-search/cds-compare.html