What? You want us to pick just ONE? I've got a short-list - Rocha, brings calm until the latin temperament rises; Joel Ward, he's really come on; Mullins, he's been quietly efficient; Kanu, who is as ever such a pleasure to watch; and Herman, who has never failed to make me laugh.
Jamie Ashdown / Joel Ward / David Nugent in that order. Can't just choose one Devo Hermann / Sonko - merely for entertainment value (both good & bad) !!