I think he is a relatively solid young player, with a top class goal kicking game.
Don't think he is as good as Matty Smith was at the same age, and he is no world beater.
For those of us of a certain age, he is more Gus O'Donnell than Sean Long
Personally think he is a lot less talented than any of the young halves we have brought through in recent years eg Gaskell, Lomax, Wheeler, Smith and Eastmond. Going way back he isn't anything like as impressive as the young Lee Briers.
I think his lack of even a sniff of X factor has been born out by Wire choosing to sign Ratchford and Myler, while retaining Briers.
Something else to consider is that he is only 11 months younger than Joe Mellor at Widnes. Mellor had his career put on hold for over 12 months with serious injury. However Mellor is already significantly better than O'Brien, and is a genuine threat in a very ordinary Widnes team.