I am so surprised to find this one still a "hot topic" after so long! my opinions have changed a lot since I last posted here, and Bonnie Anne took the spot of favorite companion
I see that it has been a long while since you were here last. Welcome!
There are actually a number of new Companions that have been introduced. The Spirits of Yuletide, the Pirate Nightmare companions, and the Obsidian Key Companions should be new to you. I suggest you take a look at them, the Obsidian Key ones are actually stellar in PvE combat.