Final Lap Twin & Bomberman are mine. I wonder if people favor the first game they really loved on TG over quality of game. Or if they favor the games they played as kids - that's the case with me.
It's probably only natural to favor something that you experienced back then, because despite how good the game really is, there is also going to be this nostalgic bonus that is added in the mix to give it a slight boost.
Also, I have to admit that I've only played a small fraction of all the Turbo games that were released. So, there could easily be some games I haven't played that would make me think they should be No.1 . It's all very subjective.
Final Lap Twin is amazing by the way.