I have the Drop version of the Planck, as well as the ErgoDox EZ, the Drop ALT, Logitech G915, two Havit low-profile gaming keyboards (TKL and full), and the AA battery Apple TKL. Previously, I had a Das (Cherry MX Brown).
I have relatively big hands (4" across the knuckles, 9" base to tip) and relatively wide shoulders (20+").
I suffer from wrist and finger pain when typing. Lower-profile is better for me, in general.
The best, overall, is the ErgoDox EZ, but takes up a ton of space and requires serious dedication to learn to type well on. Also, the thumb movements make this a bad keyboard for people who have thumb arthritis.
The Apple is best for finger pain and typing speed but not great for wrist pain.
The low profile mechanicals (Havit, Logitech) are fine. I get some finger pain and some wrist pain, but not a ton. They don't feel great to use.
The Planck is the only standard key switch mechanical keyboard I can type on without hand & wrist pain. In terms of overall pain, it's second only to the ErgoDox EZ. I also retain more typing speed than the ErgoDox EZ. I find the frozen in place hand positioning better than trying to use the Drop ALT in a keyboard tray.
(Edited to add thumb arthritis note.)