for work we use Camerabits Potomechanic - very simple, very quick and zero editing capabilities.
I too use Aperture, but often find myself getting lost - and dread the day I have to export my entire library!!!! to another machine.
Photomechanic is great, because you use conventional file structures - and the software finds them rather than relying on a specific software to organise your files. ( like Aperture)
It has been used by pro's for years, for batch processing, uploading,sending and adding file info.