This is wonderful, and seems to have a significantly improved framerate over the last beta. Super Xevious works fine for me, unlike TjLaZer's experience, but I've noticed two small and insignificant bugs when running on Amiberry.
When playing Super Xevious the "Super" is missing from the title screen (even though it's shown in the video on this page), and when playing either game I don't get the credit sound on adding the first credit, only on the second and subsequent credits.
Neither of these are at all important but I thought you'd want to know about them anyway just in case. This is a superb port, and one I would have dreamed of back in the day. Compared to the version that came out for the Atari ST it's almost comical. Well done to both of you.