I love Vandoorne's most, will look fantastic in the (rumoured) white and orange McLaren. Hamilton's is nice too, like the candy red and yellow.
Both Red Bull helmets are naff, dominated by the brand logo, as if we wouldnt know who they're driving for, as they sit in RED BULL branded cars, in their RED BULL branded overalls. Verstappen's is basically the car design, put on a helmet.