Parkinson is excellent. His hurling and football podcasts are great apart from Damien Hayes who is as bad an analyst as he was great a player and is full of bluster.
If you were given a Neil Francis article and a Ross O Carroll Kelly article, without the writers' names on them, you might be hard pressed to guess which was which. I don't like him but he's the only bit of rugby content I might read in the papers.
I think McKenna is genuinely brilliant though. Some of his work around the rugby world cup bid, Dublin's financial advantages and preferential treatment within the GAA, his rebuttal of the notion that rugby is no longer very elitist and Mo Farah's incredible list of links to doping were excellent, to name just a few off the top of my head. His does engage in a fair bit of trolling on Twitter but given that he winds up po-faced, self righteous types, fair play to him on that too.