How are the organizational abilities of Lightroom for Mac in comparison with Aperture?
You can organize files and collections pretty easily. You can also rate and label using various methods (stars, colors, flags). I have no experience with Aperture so I don't know if it's easier but LR was designed with Pro photogs in mind and they deal in large volumes of photos. My fave organizational feature is the collections / smart collections and virtual copies.
I recommend one of Kelby's books for learning you way around LR. He not only goes over the development tools but also all the organizational features of LR which was very helpful for me as I was all over the place with my photos!
When you upload images to LR from a card you can have it make a back up to your hard drive at the same time and then set this up as a preset, just makes life easier really.
Random off topic numerical coincidence tidbit - my number of posts is 1122 and earlier today I ordered the