I'm not using it to manage photos, for that I use iPhoto '08. I'm using it for my standard heretical workflow:
- Import JPEG and RAW images from our Canon SD1000 and Digital Rebel XT.
- Rename files to embed some roll and date info in the file name.
- Import into Aperture, Adobe Lightroom or iPhoto for post-processing.
- Export as JPEG 98%
- Import into iPhoto '08 for archival storage and uploading.
- Delete the RAW images.
It's better. Much faster for image browsing, a bit faster than Aperture on my slowish PPC iMac for image editing. LR is easier to learn than Aperture, even though I think the Library/Develop division is dumb.
It's even a better Macintosh application! Aperture uses weird GUI elements, LR sticks mostly to the Apple standards. It's the most Mac-like of all Adobe's apps, because it began life on the Mac.
Aperture's theoretical big advantage is that it can import an iPhoto Library -- but it can't handle video, Photo Books, etc. And, of course, Aperture doesn't support editing of image dates - so I can't use it as an image store anyway.
For what I do today, LR is a better solution.
Aperture is not looking very happy these days ...