Hi PC,
first of all, let me say well done on your Round 12 so far! I hope you can really bring it home, and nail a huge one!
I don't like Vanilla answers, but I think has to be Ward.
Figures include Round 12 scores and Price for upcoming round 13.
Ward $530,400 - 142, 97, 109, 137, 90, 132, 116, 88, 124, 72, 125, 101 - ave 111.1
Shiel $547,200 - 102, 98, 101, 108, 92, 114, 92, 120, 109, 118, 115, 88 - ave 104.8
Coniglio $527,800 - DNP, 78, 96, 126, 127, 117, 110, 118, 135, 95, 66, 108 - ave 106.9
Shiel probably has the consistency this season, but Ward has the better ceiling (this season). Coniglio has been given run with roles in some games, and that probably rules him out. Ward has the bonus of being cheaper than Shiel, too.