^
So far, your enhancements are subtle and nicely clean up the images < I'm particularly looking at the car bodies.
I'm a great fan of Aperture3 (I've never used previous versions) and find it typically Mac and very intuitive to the point of not needing training vids. Apple's onsite short vids are helpful though < Are those the ones you're referring to, Carl?
I upload pics from my camera into iPhoto.... I then select the ones to be edited and do so in Aperture (set in iPhoto as my default editor).... If they then need more detailed editing I do so in Photoshop (set in Aperture as my default editor).
Have you used Aperture's Stacking feature yet, Carl? It's brilliant for comparisons between the originals and edited images and you can see your changes with just a side swipe on your TrackPad - Very cool indeed.