Most people go fishless, as it's kinder for the fish, quicker and much less work. Unless you already have fish because you were given bad advice, I really see no reason why anyone would choose to do a fish in cycle.
I cant say i really have a preference, i did fish in cycle on my main tank a year ago and recently did a fishless cycle on a fry tank filter.
Thing is, once you have a mature filter, you can nick media from it to near instantly cycle another one so its not like you are forever cycling fish tanks.
If i wiped out all my tanks and had to start from scratch, i would probably do fishless.
If i was totally new to fish keeping but understood how the cycle works, i think i might do a fish in cycle, purely because i know i would be really keen to get some fish in the tank as soon as possible and because im a selfish human being and my needs are far more important than the fish.