Dwarves and goblins could be underrated for their darkvision

[Colette Brunel]

I am thinking that dwarves and goblins could very well be underrated, especially at low levels, for their darkvision. Light, Continual Flame, and sunrods alike confer only a 20-foot radius of bright light; I see nothing that suggests that there is a further halo of dim light. Darkvision, on the other hand, extends indefinitely.

Therefore, dwarves and goblins might just be optimal for Paizo's style of dungeon-crawl-insistent adventures, beyond even humans with Natural Ambition.