Do currency.ie allow you to make transfers online? XE.com's demo looks great on the face of it, you can arrange everything at the touch of a button, whereas I don't fancy having to ring up everytime I want to make a transfer.
It all comes down to speed. If you need it next day (after they receive the money) currency.ie wins, if you don't need speed (3-4 days) than xe.com wins because there is no cost involved as no wire transfers are involved.