i've always used ngk platinums in my 1.8 and 2l zetec e engines as have others i know and found to perform the best. i'venever had any issues with them and my cars have always run spot on and performed brilliantly with them so i recomend them.
i've always gapped them to 1mm according to my 2000 manual but a mate with more upto date info says these can be gapped to 1.3mm which is far better than the motorcraft ones at 1mm.