2nd that. Had a nightmare early on with Paypal, chose WePay and never looked back. Lowered rates makes them now comparable to any service out there, including Stripe.
* Full support for platform use case including the easiest possible merchant onboarding and ability to charge "app fee" for services.
* Support for all experience levels from hosted pages to payment buttons to iFrame solution (full PCI compliance) to Credit Card Tokenization (PCI compliance required).
* Simpler Credit Card Tokenization API that allows you to immediately charge the user and store the credit card for later use.
If you're going to accuse Stripe of not being upfront with its customers, you should at least put a disclaimer that you work for WePay at the top of your post.
Being specific on the details wouldn't hurt, either.
I don't understand the point you're trying to make with your comparison. Stripe's answer to PCI compliance is "use Stripe.js to make sure credit cards don't hit your server and then send your QSA to us". Yours is...?
Stripe's answer is, as these things go, a very good answer.
Is Paypal considered a marketplace-style payment system?
Two other newcomers are BalancedPayments.com (Gittip.com which has been getting some attention on HN is using them now) and BancBox.com . I have not used either but they are on a shortlist for a project I'm working on.
Not quite sure what you mean by "simpler," since it would appear to take exactly the same number of steps as our API does to store and then charge a credit card (and with virtually identical parameters).