I've been using Emacs for several years now, and I think the real solution is to turn Caps Lock into another Ctrl.
The right Ctrl key is in a very uncomfortable position whether I press it with my pinky or with the base of my hand, so in practice I basically never use it. The left Ctrl key is not as bad, but it's still not comfortable if I need to press it often. Caps Lock, however, only requires a slight adjustment of my left pinky finger to press. Simultaneously pressing x with my left ring finger is slightly weird, but not uncomfortable. There are some other keys on the left side that don't really comfortably combine with left Ctrl or Caps Lock, but I don't run into them often enough for it to be a problem.