For my vote, I think Yie Ar Kung Fu wins me over. Its so retro, and reminds me of the Sega Master System which was the king of the hill! The rest kinda sound like SNES deals, and wern't as good or authentic to the classics. For my second vote, it would have to be between Ecco and Sonic. But I think Sonic edges out slightly more for its cute piano and as always classic sega tune for the ages.