Well, I'm a Mac user from lots of years now. I have a powerbook G4.
I get a tryout of Aperture and been playing and editing some photos with it. Let me tell you my thoughts about it:
• Its a good software, yes.
• If you are a experienced user in Photoshop, may be you don't need Aperture.
• Aperture, IMHO, it's like some functions of Photoshop with a software to arrange pictures.
I use, iView Media Pro + Photoshop CS2, and works very well to me.
Aperture is very user friendly (as almost all apple), has a lots of functions and great RAW compatibility, but all the things you can do there, you can do it in PShop.
What I like from Aperture:
• When you make some adjust to a picture, automatically Aperture duplicates it and works in a new one. Making safer to work and never save over or delete an original file.
• Great RAW capabilities.
What I do not like:
• Aperture makes a "library" archive on your computer, that contains all the info of your photos, including the original ones and the ones you adjust. But this info is only available inside Aperture. I used only 1 file to work on it, and this library archive size is 12MP from a picture that its original RAW size was 8mp.
I thought when I make some change on a photo, that Aperture duplicate it and work on the new one. And so far, what it do, is remember what you do to that photo in this library, and doesn't afect the original one. If you want, you can save the New photo in other place. But this library file, continues to grow.
After I use Aperture some times this week, I prefer to stay with iView Media Pro + Photoshop CS2 to manage my pictures including RAW ones.
I used to see If paying $499 was worth enough. But not for me.
May be if you are new to digital photography, with Aperture you can find in a single software all the things you want.
Cheers