I'm demoing a photo editor called "Picture Window Pro." (
http://dl-c.com/content/view/12/26/) (weird web address, I know)
Anyways, it's about $90 and it looks like a lot of pros use it and say it does everything a professional photographer needs as well as Adobe Photoshop. You work a little differently with it than Adobe. Instead of using frames you apply effects, filters, settings to the original picture and after applying the effect or tweak a new picture is created. You can then continue working on the new picture and create a new one out of that, etc. At any time you can come back to a previous tweak and start over from there. I'm in the process of learning it and checking out some of the tutorials on the web site.
Hopefully this isn't just old news, but for those of you who want a really professional editor, why spend $600 when for $90 you might be getting everything you need.
Paul Holmes