A good channel on Mayo Irish has begun at https://www.youtube.com/watch?v=zAN1ArbuS0U

He says he's not a native speaker, but speaks to a native level with Erris Irish.

I think his pronunciation is quite good - although Bríd being from Connacht will have a more informed view - and he seems to want to give the real dialectal forms. He states here that no-one has "conas atá tú?" People interested in Erris might subscribe to him.

EDIT: I see now it is a year old, so he has four videos so far on this subject. I thought it was entirely a new channel.