Out of what Retro Gaming Cables has to offer, the Packapunch SNES RGB SCART cable should be fine specifications-wise, although I do not have personal experience of the Packapunch cables. They are fully shielded and have Luma sync as an option. I recommend Luma sync, if possible. Usually cables labeled as CSYNC have a sync stripper in the SCART plug end, which is suboptimal. The cable being fully shielded does help, though.