Gene
I watch, the TICK, TRIN, and the S&P Futures. I don't watch the Nasdaq or Dow Futures. The reason being the S&P's are mainly used by professionals to hedge or trade with a lot more volume.
The trading pits for Nasdaq or Dow futures are very small in comparison. I've noticed if the market is going to move it will do so in the S&P's usually first. I also have a squawk box for the S&P pit which is about 3 seconds faster than my quotes.
Robert Tharp