In reference to the point brought up by Prestigiditalis (above), the effectiveness of 2 defenders kind of depends on the DM style/habit. By that I mean, do your combats usually involve an elite (or solo) and a couple others? Or do you usually have half a dozen enemies?
I was in one game where the party was frequently against 5-8 enemies at a time and having two defenders made a really good "line" that kept the squishy members safe.
But on the reverse side of it, I've been in a game with two defenders where we frequently only fought 3-5 enemies at a time (one of which usually being an elite) and, yes, there would often be an issue of conflicting marks since there were fewer creatures to mark. Thus, someone either never bothered to mark or just had their mark overwritten by the other every other round...
But in general between leader vs defender vs controller, a) i think 3 leaders would be too much, b) it sounds like you'd prefer a fighter/defender over a invoker/controller, c) 2 defenders isn't the end of the world, just don't go after the same mark as the other defender... -- so, go with the fighter/defender
caveat: are the rangers melee or ranged builds? because if they are melee, well, you don't really have any good range classes here, so be sure you all have some sort of ranged backup weapon (bows/arrows/javelins/throwing shield/etc) for those times you need to hit something and not be up close about it (due to auras or terrain or hazards, etc).
I was in one game where the party was frequently against 5-8 enemies at a time and having two defenders made a really good "line" that kept the squishy members safe.
But on the reverse side of it, I've been in a game with two defenders where we frequently only fought 3-5 enemies at a time (one of which usually being an elite) and, yes, there would often be an issue of conflicting marks since there were fewer creatures to mark. Thus, someone either never bothered to mark or just had their mark overwritten by the other every other round...
But in general between leader vs defender vs controller, a) i think 3 leaders would be too much, b) it sounds like you'd prefer a fighter/defender over a invoker/controller, c) 2 defenders isn't the end of the world, just don't go after the same mark as the other defender... -- so, go with the fighter/defender
caveat: are the rangers melee or ranged builds? because if they are melee, well, you don't really have any good range classes here, so be sure you all have some sort of ranged backup weapon (bows/arrows/javelins/throwing shield/etc) for those times you need to hit something and not be up close about it (due to auras or terrain or hazards, etc).
