I personally like to play longer games. I had a beef in MPFL early this season that the clock was running too long between plays. A rule change was later issued and our games now run at about 3 hours (with 25 minute quarters and a 45 second clock).

The longer the game the better so long as the opponents are well prepared and ready to coach their teams. We saw a great Super Bowl between Burgess (CAR) and Mike Carr (CLE). The game was about 3 hours but the strategy and coaching on the field made for an exciting contest.

So my answer is longer quality games. Let the final game stats be your guide as far as how you tailor your periods/games, etc.