[majewsky]

> I'm used to Google's UI (yes, Duck's is similar but I'm sensitive even to subtle changes).

Google's UI also changes from time to time. When that happens next time, use that opportunity to switch since you have to adjust to change anyway.

> I would have to take some time to verify that Duck is as good as Google.

If you start using Duck, and you come across a search where it doesn't give you what you're looking for, just append "!g" to the query to get redirected back to Google. That made switching rather pleasant for me, knowing that the "escape hatch" is only a few keypresses away.

> After a quick comparison, Google seems slightly better at search.

It seems to depend on the person. For technical searches, Duck is usually much better because they embed numerous sources as Instant Answers (Stack Overflow, MDN, GitHub, etc.)

> Google has various little features that Duck doesn't

As has Duck, see above.