[modeless]

I've tried a few, not an expert, but I think Coqui's new XTTS models are decent performance and quality wise (just in terms of how the speech sounds, can't speak to the voice cloning fidelity as I don't care about that). Open source code but non-commercial license for the model. They also have a bunch of models with more permissive licenses that aren't as good.

I doubt they're better than Google's TTS though.