Mark
CreativeMountainGames.com
One thing I think that isn't mentioned in this broad brush discussion is that, even at low levels, there are more powers in play (. . .)
Kinda discussed somewhere up there in that it's agreed that fighters and some classes have seemingly more options and other classes similar or less. Anyway, I think the grind boils down to using the best power one can once it is figured out and that often comes down to a spacebar tapping situation after the battle tipping point. Once the daily is gone and the encounters are used (if the daily and the encounters are useful, of course) then it often comes down to picking the best at-will (or attack) and tapping it home (with brief respites for any necessary healing).