I really like the HQ4x filter, but I'm a layman and I have a question: Is there anything higher? Something like an HQ6x or HQ8x? I saw some emulators images with VERY filtered sprites , without distortion, perfect smooth angles, anti-aliased, and I wonder how they do?
Edit: So many people with knowledge but no willingness to help a user with a simple information. Thanks, you guys are great.