Banshee's aren't the best cards around. Also, the new Corn seems a bit more unstable because it crashed on me several times by random. But just don't pay attention to it. It even loads the 256 Mbit Roms like Zelda and Ridge Racer in a flash. It keeps running at an ulta-high speed without sound.
Speed is perfect with sound enabled.
All in all, I can tell you that you want this new version. Yes you do. It's up to ContraSF to decide if he will release it at this point. His choice, not ours.