Good topic Nick... my experience on Russell has been based on 110 Tick as I was for many years a John Novak follower...
Fibonacci Day trading software - NEXGEN Software Systems (all his free stuff obviously)... so my central timeframe is 110 Tick... from there on I like to breakdown information as I am more of a scalper... to 1/2 55 Tick 1/5 22 Tick... but always mantain the 110 T spirit, obviously tick charts have the advantage of taking into acct price action, time based are nice for big volume picture on 5 min but for timing reasons I would always recomend tick charts... cheers Walter.