I unlocked the Tier VII US battleship, the Colorado, last week. For a long time, I've heard a lot of players say that the Colorado, aka the "Crap-orado," was not a very good ship. I have to say, I've been pleasantly surprised by it! I've noticed that I'm getting a lot more citadel penetrations in the CO than I did in the previous NM, presumably due to the greater penetration of the CO's 16" guns. One caveat, though; I did use some of my free XP to unlock the modules on the CO to reduce the grind a bit.