I used Colemak-dh for a couple years and really loved the rolling flow. I tried going back to Qwerty for the Vim key convenience but missed the flowy feeling too much.

Then I looked around for some more modern layouts and landed on Hands Down Promethium. It’s got the flowy feel and its Vim keys are so much more convenient than Colemak-dh. I really like having ‘r’ on my thumb, also.