Anyone using this with v4? We're looking to get a more seamless purchasing experience than we have now. I've been testing v4 with the 'paypal' payment plugin and while it's super easy to just put a PayPal email address in aMember config, we're looking for something more cohesive for our site rather than blatantly leaving our site to PayPal's interface. I also know that PayPal can customize the header a bit to fit the feel of your site, but that still isn't quite good enough for what we're looking for. If not PayPal, any US-based aMember users using a payment plugin to do mostly-seamless checkouts?