hands down team dark. Reason being because to me, the levels were more challenging and fun and that aside from the adventure aspect, it had more of a meaning playing as them with rouge mysteriously finding shadow in a pod after everyone thought he was dead at the end of SA2, and gets even more deeper when he found android clones of himself on the final fortress and thinks that he may be one to, though of course it was confirmed later on that he was the real shadow In the shadow the hedgehog as he had the memory flashes and he remembered everything at the end of the game, including the events of SA2. But aside from that small little reference, this is why Team dark is my favorite.