Arsenal currently have the biggest opportunity, but they are still in a very vulnerable position to being replaced by Manchester City. They also failed to get 3 points from Anfield last night. It's not bad to get 1 point at Anfield, but that makes their position even more threatened. BTW, it's not only you who expect Arsenal to win the EPL title, there are many people out there who have the same hope because it's been a very long time since Arsenal won that title.
I must say I am disappointed at the results from Anfield because it has made our title race more stiff now. Like you said, it's been a long while since we won the title and I would love to see us win the league this season. Let's just hope for the best and prepare for the worst...