draft kings has the cleaner navigation i feel but i prefer fan duel because it gives you the ability to look at people's profiles and how many wins they have. draft kings doesn't allow you to do that (which i never understood)
think about it: you're always at an advantage if you spot someone in a fanduel lobby that's barely played before or only has a few wins to their name. betting in anything is about playing the percentage, and i feel your percentages of winning are consistently higher if you're finding weaklings or amateurs on fanduel. on draftkings you cant do that, which sucks