I've been using Whisper with great results; GPU acceleration gets the job done, nothing leaves my box, and the medium model is overkill.

https://openai.com/index/whisper/

https://github.com/openai/whisper

Yeah I will have to try whisper as well. I didn't try it because I wanted to tinker more and also I had thought that whisper was an older model but I think that if it gets the job, then it gets the job done and I will be trying it out on the text that I mentioned, thanks for mentioning it as I will give it another go :-D