i normally spray between 10-15 times for almost all the fragrances i wear, with very few exceptions (potentially cloying, abnormally powerful projection and sillage). it's probably also one of the reasons why i have always (subconciously or not) steered clear of vintage and the uber macho masculines of the 70's and 80's.
i have noticed that my skin is very dry and it absorbs most perfumes very quickly leaving only a faint trace/cloud of smell. i have never received a negative comment from friends/relatives/colleagues and i know what my 'limit' is (so to speak). i'd spray 1 or 2 times only if it's from a sample (because there is only that much in it).