I'll admit I'm a novice with Photoshop, I've never used it for more than a moderately complex task. Usually simple cuts and meme making type stuff. I also once designed a poster that required me to make a vector background and arrange some ripped svg elements from a old swf file.
Every time I try GIMP it's a nightmare. Even the simplest thing usually makes me find a video to explain where to find it. Cutting, pasting and layer management is a pain. For super simple stuff I use Pinta and anything marginally complex I use photoshop and it's always felt easy.
I know that's hardly scientific but I've always seen photoshops interface as good.
Every time I try GIMP it's a nightmare. Even the simplest thing usually makes me find a video to explain where to find it. Cutting, pasting and layer management is a pain. For super simple stuff I use Pinta and anything marginally complex I use photoshop and it's always felt easy.
I know that's hardly scientific but I've always seen photoshops interface as good.