We had it around 350, just in case someone joins and everybody spikes, so people who are at around 250 don't get dumped everytime some 999er joins. I believe that you want a little overhead in this parameter above the value you would like to see as the max player ping, otherwise ppl at that ping get tossed if the server has issues, and you end up more with people around 180 (because somebody three time zones away tried to join on dialup). To not screw ppl at 250, we had to set it higher. Or such was my experience with it. (I had friends in the Midwest trying to join a twelve-slot server on the West Coast, and some "spiky lag" issues, according to one or two, so we raised that a bit and less ppl got randomly booted).