Pros
- Cleaner user interface
- Faster importing, especially for Raw shooters
- No cost to upgrade
- AVCHD video support
- Retina display support
- Improved editing tools
- Unified library structure for iPhoto/Aperture
- Overall performance improvement on compatible Macs
Cons
- Requires Mac OS X 10.7.4
- Some may miss advanced Highlights/Shadows sliders
Remains of the Day: This belongs in a museum

