I asked Stripe a question once, and they answered! Specifically and referring to the details I had described in my question. I'd never expect that from a Paypal. But like Braintree, that will probably become a thing of the past as they grow bigger.
I've always received (very) high quality responses from Stripe support in the next 12h. It's a great company.
Concerning Braintree, the fact that they do not provide REST like API and only SDK is a no go.