I use GIMP for my image manipulation.
I have the Script-fu plugins and the GREYCstoration noise reduction plugin installed.
I agree the GIMP GUI is better than the Photoshop GUI.
I still can't figure out how to exactly place a crop in Photoshop (it's a doddle in GIMP).
I think that many Photoshop tools are better than GIMP's though (e.g. brushes, clone tool).
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