Photoshop elements isn't quite the same as Photoshop and I wouldn't even consider it a more basic version. Photoshop Elements is an all-in-one program that combines photo management with minor editing and it is aimed at consumers rather than the pro-sumer/professional(s) that Photoshop is so it is designed to be more user-friendly. However, because of its target audience, it's not as powerful or comprehensive as PS or GIMP. If all that you use the GIMP for is saturation, cropping and resizing then you might be able to get away with cheaper(or perhaps even free) programs.
that Zorro recommends here would do all the things you need for free.