Stripe
Stripes, wants you them to be the center point of your relation with your customers.
We prefer no-big names, no information collection about my customers, almost a white-label payment processor that we could sub-contract.
We still have some time, and are searching for the right company as billing and payment processor. But we naturally eliminate companies that are VC funded and, or located in high-cost areas (so that eliminates most of the CA/NY/LDN places).