the cd rom images (typ about 15 pounds to buy) are of the latest filming which was done I think in infra red so graphite pencil shows up well - the original microfilms (eg those in Manx museum) from which Brian originally worked are unreadable in sections and to be honest some of his first stabs were no better than semi-inspired guesses - there are still misreadings in the new index but it is a vast improvement on the 1st edition and judging from others comments on the Ancestry index - he however expanded abbreviated first names, whilst in general this is ok, for some doubtful readings it gives a completely wrong impression of what is actually on the form.