I’ve used both Gimp and Photoshop. I’m not super skilled in any of these, but Photoshop feels the most natural to use. I’ve never figured out a good workflow for Gimp.
It’s a shame, because functionality wise Gimp is quite competent. It’s just the UI that’s crap.
This is not necessarily true. Linux had trouble with Nvidia Optimus, which is a GPU technology that seamlessly switches between power modes. Well, that is if it works properly, which it didn’t for Linux. I haven’t heard it in a while, so I assume it’s not a problem now anymore.
But it was a big problem where Linux laptops drained batteries much faster because they were using the GPUs at max capacity at all times.
What I’m saying is that the efficiency of Linux depends on access to hardware features, and that might depend on the vendors of the drivers.
Also, like it or not, if there’s one thing I envy about Mac is its power efficiency. They usually last really long on one charge.