I know that probably everone has read this but just in case... I think Spurgeon makes a great point.
Charles Spurgeon preached a sermon called Free Will - A Slave. In it he gave an example of an Arminian prayer. If an Arminian were to be consistent with what he believes this is what he would pray:
"Lord, I thank thee I am not like those poor presumptuous Calvinists. Lord, I was born with a glorious free-will; I was born with power by which I can turn to thee of myself; I have improved my grace. If everybody had done the same with their grace that I have, they might all have been saved. Lord, I know thou dost not make us willing if we are not willing ourselves. Thou givest grace to everybody; some do not improve it, but I do. There are many that will go to hell as much bought with the blood of Christ as I was; they had as much of the Holy Ghost given to them; they had as good a chance, and were as much blessed as I am. It was not thy grace that made us to differ; I know it did a great deal, still I turned the point; I made use of what was given me, and others did not—that is the difference between me and them."However, Spurgeon explains that even an Arminian prays like a Calvinist.