Long time lurker, first time poster!

I've just picked up a 2002 Golf GTI after years of wanting one. After some researching around I'm a little confused as to when I *should* change the timing belt. It seems to be a fairly good spread and going by users on 'tex they say they had a change at 80k miles (128k km) and then in the service manual it says it should be replace at 180k km, and then again there are users saying it should be replaced at 90k km. So when exactly did you change yours?

The car has 106k on the clock and I'm hoping to get some more love out of it before I pick up an ECS kit and switch it out.

Oh and as a side question, what's your average L/100km? I'm getting roughly 9-11L/100km with a good mix of highway and 'to-the-store' driving.