Photo library management: iPhoto and Aperture?

I am looking for input here. Presently I organize my photo libraries (yes two) using Aperture and iPhoto.

I use iPhoto primarily for what  I consider personal shots (shots w/ friends, family, camera phone etc) mostly because I had the library organized the way I wanted using folders and, when I first moved to a Mac, iPhoto understood this organization. I use Aperture for more what I consider my photo projects which has become the lion share of current photos taken.