Aperture 3 for me. I really liked iphoto when I bought my macbook a few years back, but I wanted more editing power. I tried GIMP but there wasn't enough support to learn it and it was just different enough to photoshop that the tutorials didn't quite work and had to be adapted. I had made up my mind to get aperture and then they dropped the price in the app store so it was a no brainer for me. I tried lightroom and probably could have gotten on with it, but since I was coming from iphoto the transition to aperture was easier and more integrated into the mac framework. And LR was a lot more expensive once the app store started with aperture. I just got elements with my Wacom tablet, so I'll give it a try for some specialized stuff, but with the brushes in aperture you can do about anything you want.
thanks
rick
Thanks
Rick