Yep, I spent the last two days hanging out in the Stripe campfire chat while I was implementing my own billing system. Some of the questions were borderline bizarre and I was truly shocked at how the Stripe team went above and beyond to answer every single request. My only other experience is with SagePay who I spent weeks asking questions on their developer forum to get a handful of vague responses.
One of the reasons that I like stripe more is that they give you much more granular control ove the user experience. Users on your site never need to know that you are using stripe to process payments. Things just work. Also: PayPal customer service is a joke, they will freeze your account etc... etc...
They do that to save money. PayPal has very low losses due to fraud. Maybe if Stripe gets large enough to attract attention, or starts doing business across international boundaries, or in Eastern Europe, they'll start doing the same thing.
By the way, can someone explain to me what's the difference between paypal and stripe? In what paypal don't fix web payment?