My vote definately went out for PayPal. From everything i have seen all across the internet PayPal is accepted much more than anything else. PayPal also seems more secure and more likely to continue growing than any of the other systems.

Another great feature in PayPal is the new "Secure Card" feature, where you can have PayPal generate a Mastercard number for you to use temporarily. You can set a maximum amount or a maximum time. Making it great for use where PayPal isnt accepted!