It's well documented that mechanical switches are better on the hands and wrists, so toss that Apple one and something with the Cherry switches you like. I write all day on my computer, 8 hours at a crack when I have something going on, and my hands used to kill me. I bought my first mechanical keyboard and it got worse - until I got used to it. The right muscles got stronger and now I can type all day long with not pain.
Just wondering, do you have the older white model or the newer silver one?