Stripe are non-evil to me and non-evil to my customers. They have never done anything unexpected or screwed over anyone I know. Paypal have fucked over a lot of people I know for inexplicable reasons. They've fucked me over personally as well as a customer (They won't let me use my personal credit cards to pay anything via paypal, with or without a login, and they won't tell me why). A small difference in cost is absolutely irrelevant when the worst case situation on one side is "pay a bit more for good service" and the worst case situation on the other is "lose access to a nontrivial amount of money for many months and lose business for the same period".