i never play tournamnets with more than 5 min break.. i play on stars,fulltilt,
unibet,poker 770,,and more..and i never seen more than 5 min ..
i think 5 minutes break is correct time,for pause,,toilet,food,drink..and more.
but,i also for break wiith 10 0r 15 min break when tournaments goo 5,or more hours.