Mocking frameworks recommendations

Can anyone recommend a user-friendly and maintained mocking framework?
My company started evaluating Isolator++ which is quite powerful but it's commercial and we want to try an open-source framework as well.
We tried GMock but some of our devs didn't like it, and in comparison to the commercial product it was less user-friendly.
Any recommendations are welcome (commercial as well) and please explain why it's your favorite (or why does your workplace force you to use it :) ).
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