I'm trying to decide between Paypal PayFlow for a transaction processing service or a service like BrainTree.
BrainTree's service intrigues me because they will actually return a token to you for a credit card which can be used in future transactions. This token acts like a GUID for the credit card, but is useless if stolen. BrainTree is the only service I have come across that uses such a system - but I'm not sure if they are unique or not.
I heard some praise for BrainTree on a recent podcast, and had not heard of them before.
I wondered if anyone has any general advice on picking between the two - from the perspective of how much programming I will need to do or PCI concerns.