Facing the camera◊

Pro: Distinct division between teams.
Con: Actually can't think of a con for this one.

Psycho Rangers/Space Rangers vertically stacked◊

Pro: Clearly shows both the good guys and the bad guys in a higher resolution than the side-by-side version.
Con: Since they are not facing each other, may be confusion about whether the Psycho Rangers are just power-up versions of the others to those not familiar with the show.

Leave the picture as is, it shows the Trope Namers and that's good enough.

No picture needed.

Psycho Rangers vs Space Rangers◊

Pro: Shows trope namers faced off against their good counterparts.
Con: Low resolution to keep image from being too wide.