I've been through all those and I think Kalas/Blum are the best. I feel more energized listening to them than Browny/JD.
What does Kalas say at the end of that first video? "Glad he was compared to a horse and not a ______"?
My only complaint with Kalas is that his voice has a bit of a nasal sound to it, as if he is fighting a head cold. It's mildly annoying.
I can understand that, but to me he sounds like an old-school guy. He does wrongly get or forget basic stuff sometimes...or mentions the wrong thing at the wrong time. If he was with someone other than Blum I might not like him as much, but those 2 together are incredibly great.