Recommendations for Ergonomic Keyboards

Which ones do you like / not like? I’ve used the standard ergonomic one (elongated, wikth a spacer between the T/G/B keys and the Y/H/N keys). I’m wondering about the weirder ones (tilted sides, 2 separate halves, etc). Any recommendations?

It’s an entirely different set of muscles to type, but as yet I’ve not had any issues. You can get up to about 50 words per minute (I’m currently getting 40 in a typing test thing, but I’m not sure I trust that as I am not very good at transcribing.)

Just something else to look into.