Sorry, I've been away from emini futures for a while and have not done my homework. To save me some research time, can someone chime in about the differences in liquidity, spreads, etc. between the ICE contract (RLM) vs. the CME's S&P small cap 600 ? I know the have different compositions, but which is preferred from a trading standpoint ? Is ICE doing a good job of promoting the emini Russell it has taken over from the CME ?