I think the 2 shot obliterator is going to get fixed with a timer.  Right now there is no purpose in having 2 obliterators as one can shoot as many times as you want given resource limitations.  Having 2 only gets you 2 different timers going.  I like them, and the combat ones I actually believe carriars are stronger than behemoths even Obliterators per CC, so say x2 upgraded carriars and x1 coordinator vs a Juggernaught, Juggernaught is stuck in the first lane, and that is a problem.  Hence why the other ships I feel have better value.  

juggernaut wipes them with 1 button oh wait they sit 3 turns inactive after....how many turns does it take to build that glorious fleet ? way more then that? too bad

just pump out obliterators they will ruin any wide faction. (most of them) you can even blow up non-colonized stars for denial. 

behemots ruined the game.

get obliterator asap and gg i will erase all your 100 turn progress in a few rounds until the missile hits. also there is simply no reliable way to tell when they are coming and where they are coming

Aeroth you forget that one button death is in the last military tier and it is optional.  IF you chose to enage and fight before you click that button and your carriar has a tractor beam, you can't retreat and your juggernaught with its fleet death button is now in the battle for its life.  There is always a counter whether you chose to see it or not.  I prefer the upgraded hull on the juggernaught as it lets me include a tractor beam in my tank ship.  The obliterator to fire early you need to have 2 techs researched in the econ tree and the requisit resources of Quadrinix and Purple aquired which are not easy to get, especially if you want to rush a shot at over 120 of each.  Defending against them is simple, you turn your behemoth into a citadel and the sheild and citadel tech are on lower tiers than any of the weapons you've mentioned here.  So I just guess I'll beg to differ and I like where they are.  Gives you the chance to gamble on your behemoths usefulness before chosing a time to protect yourself or rush its power of death and have a little fun.