Firstly, that's a really solid leadership squad. Loved Ryan's piece about it today and how they all have a different reason to be captain, to influence the club etc.
Secondly, if we're talking about one standout captain, my pick would be Buhrer. If Sione wasn't so long, then it would be him. I think coming out of the last three years, the captain needs to understand what the club endured at the low points and while Buhrer wasn't only here for a third of it, it's still a third more than the new blokes. Buhrer is a class act in every aspect of rugby league, a complete professional and represented the club tremendously off the field - after games, at training, at formal events etc. He's the kind of player that everyone should aspire to be and that should be what other players look towards whether they're young or even if they're vets.
But, thirdly, with all that said, my vote would be for a co-captaincy between Buhrer and Pearce. Pearce is vital to the progression of our spine and the club's on field success, it makes sense to give him the captaincy given that level of importance but I don't think he's as good as a representative for the club as Buhrer which, from above, is what I personally want to see from the club captain. Both are 28, both are in the prime years of their careers, both offer something different to the club but both are capable of being perhaps more influential figures than anyone beforehand and shape the club on and off the field for years to come.