Sony Ericcson c905a or Samsung Eternity?

I've found that the Xenon has some issues, not sure about the above phones. I have heard of a lot of at&t issues with the Sony, only that att took away the great functions of the phone to make you buy the data plans:(

I may just get the Iphone and the data plan, seems like a solid thing, just don't want to spend the extra $30 p/month