Definitely Issey or the more aquatic ones. I think its better to start off aquatic with someone new rather than a huff, heavy, musky introduction as the former is more airy and doesn't intrude as much in your introduction. but it also depends on the location: first time in club, etc. then that would possibly merit a more serious frag. but on a general level, definitely the unobtrusive, airy, cool aqua colognes so as to not make an encroaching first impression.