Bumble is so likable because of his accent and because he's funny. He's not a wealth of knowledge but he's really unique. And he doesn't talk crap.
Atherton is a depression pill and he ALWAYS states the obvious.
Shane Warne is very good, but he's terribly biased. I can't begin to imagine hearing him in a match where Michael Clarke is the man of the match. I still remember the WC final where he went on and on about 'Michael Clarke' and his jersey no.23 which he had passed on. He was heaping praise on him as if Clarke won them the WC. In my opinion, I've never seen a WC winning side which had it's leader with lesser input than that of Clarke. He was a journeyman in what was a dynamic side and when you put him in the same sentence as McCullum in 2015, it sounded absolutely ludicrous and desperate. Basically what Shane Warne did. Also, his media trial of Ali Cook was quite pathetic.
He has a lot of knowledge, but he's MC's mouthpiece.
Bumble does have loads of knowledge. After all he's not only played but been an umpire, but he doesn't show it when he commentates! He is a welcome relief though.
I disagree with your opinion on Atherton. Yeah he is a bit depressive, but he doesn't just state the obvious. He is bang on the money when it comes to field placements.
There is a lot to dislike about Warne, but being a leg spinner myself, I obviously am very keen on the fella, just wish he wasn't an aussie! But yes, he is biased and was very harsh on Cook. I haven't heard him be quite so disparaging of Clarke this summer. But he does talk a lot of sense.
I dislike Gower, he is very dull and also Bob willis, who does The Verdict programme is soooooo depressing.
Nick knight is a great commentator and should be doing Test Match commentary. I'd replace him with Mikey, who doesn't have much to add.