Knight_Marshal
Explorer
What does three levels of Ranger get you? Collossus Slayer? 1d8(d6?) to an attack?
What does three levels of Rogue get you? 2d6 extra damage 1/turn.
The real question is why have Ranger in the first place.
I plan on going 5 levels of ranger for CS, Extra Attack, FE-Undead and archery style. I started with rogue, so three more levels would only gain me 1d6 more SA damage.