What features are missing in Elements, compared to the full monty, out of interest?
There are certain functions to process batches of images (for example to add a border to every image in a folder, convert a whole batch of images from one format to another, create certain sized images etc), and some of the manipulation options have greater versatility and depth. Another thing that is important to me but maybe not to others, is CMYK mode for optimising images to be printed. Also, I work a lot in Illustrator, and i’m not sure if Elements deals with vector graphics in the same way. I understand there is a greater range of options and versatility when using brushes with a tablet.
But for general use, Elements can’t be beaten. GIMP is good, but not as good as Elements IMO. It is however free.