Who plays at Centre-back?

With both POOM (METHOD - 20) and OWEN (6) back to full fitness and JOHN (14) out of the Primera game, we need to decide who plays in the centre of defence alongside TEWIT (27). POOM (METHOD - 20) has always played well alongside TEWIT (27), and offers a commanding presence at the back however OWEN (6) has possibly got more match fitness and adds that much needed steel that we have sometimes lacked, but has his lack of pace in recent games left us vulnerable at the back on occasion. Who do you think should start?