I have been looking at the Nikkei futures. It seems to me it is a no-brainer to trade the Nikkei futures contracts from Osaka since they are the most liquid and enjoy the narrowest spread.
CME and SGX offer similar Nikkei futures contracts. I do not wish to dismiss them straight away. I am wondering what are some reasons to trade the Nikkei futures contracts in these 2 exchanges. Anyone trades in them?