From what I see over here, there's a whole bunch of teams that have hot and cold form, and it's very hard to predict week to week.
Leeds, Saints and Hull seem to get pretty consistent results, and then you've got seven teams all with an equal shot at the remaining three spots. (Sorry Widnes and Leigh fans, I haven't included you in those contenders at this stage.)
General wisdom is London perform well at home (when other teams have to travel further than usual), but mostly poor away (when they have to travel). But it a team can win half their matches, they should manage to get sixth? Will be interesting to see if there's a similar home and away effect when the French team comes in next year.