Apologies if this has been covered elsewhere, but is Aperture (or Lightroom, for that matter) worth it if you are not shooting RAW? My version of iPhoto is a couple of generations old, and I'd be interested in seeing the program in the next version of iLife, but I was curious as to Aperture as an alternative. I shoot a lot of pictures, but mainly JPEG. Also, my computer is a 3-year old MacBook Pro, and I'm concerned that it won't be sufficient to handle the program. Any thoughts are much appreciated.