I think I'll get slated here, but . . .
. . . I actually like all the commentators, both Eurosport & BBC.
BBC = general broadcaster. MotoGP is (sadly) very small fish in a very big pond. To their credit therefore, I think the BBC do a fair job of the amount of coverage they dedicate to it. Qualifying and races for all classes broadcast live (albeit all bar MotoGP race on red button). I was also encouraged that they broadcast the last two races of the year, and the season review, in HD.
I also think the whole commentary team (Matt Roberts, Jenny Gow, Charlie Cox and Steve Parrish) are OK. Sorry if that offends anyone. Jenny Gow I thought struggled at the beginning of the year but grew into the role as the year went on. Matt Roberts has worked in and around the MotoGP paddock for the last 10 years so fair to say he knows what he's talking about. And as for Cox and Parrish, I must be honest and say that at race time, I really don't want a load of technical jargon being thrown at me - I just want the commentator to try and sound excited by what is happening on the track. That they managed that in a season which saw largely processional racing, I think is to their credit.
I also think that in order to attract a bigger audience, they have to keep the commentary a bit "Jack and Jill". No better way to switch off new viewers than to give them a constant stream of technical info in a "look how much I know" style. People don't like being talked down to - so unless the commentary team can engage with the audience in a simple, non-patronising way, then people won't watch.
As a general broadcaster, I really do NOT want the BBC to give up on MotoGP. If they do, where are the next generation of viewers interested in the sport going to come from?
Eurosport = Specialist sports broadcaster. You should therefore expect their coverage to be superior to the BBC. I would suggest there would be a big problem if it did not! Julian Ryder, I've gotta be honest, I think is superb. He just seems to genuinely LOVE the sport. I think it comes over in his commentary, and if you've ever read any of his books, it most definately comes over in those. Toby Moody I confess I find a bit patronising. It also grates with me a bit how he has, on more than one occasion, made a point of saying how F1 is his "first love" and if they ever came knocking . . . . At least he's being honest, and I shouldn't knock him for that, but that mixed with his sometimes over the top commentary (IMO) does grate with me a bit.
As for WSB and BSB, I just think Eurosport are 10/10. Jack Burnicle and Jamie Witham I could listen to all day (JB unashamedly admits he isn't a "techhy" when it comes to bike set-up / behaviour etc, which I think makes him all the more endearing) whilst Witham is just a top bloke and always on the money.
So for me, bottom line is (after this long ramble - sorry), whenever I watch bike racing on telly (be it BBC or Eurosport), I just count myself lucky that I am a motorcyclist and am able to enjoy the most exciting sport in the world.