I use Stripe a lot (I've developed various products that use it) and have only found a couple of limitations. 1) International bank transfers. They have intern

I use Stripe a lot (I've developed various products that use it) and have only found a couple of limitations. 1) International bank transfers. They have international accounts but you can't send transfers to non-US accounts using the API. 2) Custom amount subscriptions. You must setup a subscription plan first but if you wish to accept, say, recurring donations of varying amounts it adds another layer of complexity. With 2) you can get around it by creating the plan via the API just before creating the customer object but it'd be nice to have direct support - you'd be surprised how many requests I get for this feature. Overall though, Stripe is AWESOME and I highly recommend them.