I honestly cant choose between them
Ive kept swordtails from the start and only bought my first mollies a little while back but I like them so much I cant see me ever not having them--badly worded but you get my drift!
Mollies are easier to take care of compared to the swordtails...especially the males. One morning I woke up and the male swortails sword was torn off him. Still in shock and don't even know why. Plus they are more aggressive towards the other fish which I also have mollies. Mollies are the BEST!
Swordtails to me are just like big platys, apart from their looks they are just like platys, and if you had to ask me wether i prefer platys or mollys i'd go for mollys- swordtails are pretty, but mollys have more personality and character to me .