I don't see us having much of an upper hand at scrum time. Healy is a capable operator, but far from dominant. If he was a good tight head he probably wont go backwards, but scrummaging is never going to be a major strength of his game. Best is a good scrummaging hooker, and appears to be benefiting from the new scrum laws regarding hooking. Mike Ross is something of a worry imo. While experienced, he hasn't been great this season. I doubt he'll go backwards, but a large part of me wants to take a gamble on Martin Moore on the weekend.
In any case, I'm happy enough that Corbisiaro and Cole are out.