I think the DAX has good action which starts around 3am EST. It trades at 25 euro per tick so at current exchange rates, you're talking $33 USD. If you can handle that, it's a nice instrument to trade.
Nikkei starts around 9-10pm EST. But it can move slower than the ES.
Btw, I wouldn't suggest trading so late unless you have to be up during those hours. Good health, physical and mental, is conducive to trading.
Haven't looked at the N225 in a while. Lots of action past few months. Damn thing is up like 30% on the year and it was higher after the recent correction.
Quote from Rearden Metal:
Or more accurately, Nikkei starts at exactly 8 PM est.