I've been enjoying my time with Helix, although I've had to undo some muscle memory associated with vim, and add back commands I missed too much (never letting you go, 'dd').

My major complaint with Helix, and one that will stop me from using it long term, is the (IMO) insane undo behaviour. It always undoes too much and then I get myself into a mess. There's something about undo checkpoints and being able to manually create one, but I don't feel managing that should be my problem.