Depends on what you want to do with the images. Personally I use Lightroom for almost all my editing now and only use photoshop for using filters and creating something a little different from my normal edits.
Yep, lightroom is more designed work flow and over-all corrections and edits while PS is aimed more at precision editing. If your wanting your pictures to only get saturation and contrast bumps or the sort, then definitely stick with lightroom. If your wanting more control and start removing/adding stuff to photos, the PS.