Swordtails, that is only because they are the only kind of live-bearers I've had though But I'm planning to try to get guppies, platies and mollies soon!
awwww what about mollys does nobody like mollys , my favorite are the platys and swordtails , some mollys are ok i love my black fancy tailed molly shes loverly , my male silver molly is a bit off a bully and very ugly bless , he won't let the other black molly mate with the female black molly he bashes him with his tail , i also have a silver female molly he wont let anyone near her either he wants both girlys to him self
mollies!!!! what else would i vote for?! i love my lyretail mollies, and i love sailfins (though harder to find here). fancy tail guppies ARE pretty and i will have some in the near future, but my mollies were my first real fish so i'll always have a soft spot for them