I went for the 4 hours option
Insomnia and internet addiction is a bad combination - but then I get really tired by the end of the week, so often at the weekend I'll sleep 10-12 hours or something - but still getting to bed at around 3am - so come Monday morning I am still no better off! My insomnia is trouble getting to sleep rather than early waking - I find it quite difficult to wind down at the end of the day.