Tali is the best and you can't convince me otherwise. Not even Vetra is better, and Vetra's pretty great (though I've only played the trial for Andromeda and can't quite buy the full game yet).
I'm with @kamatsu. Tali'Zorah is my favorite by a few light years. Followed by Garrus and Legion neck to neck. My experience with the Quariens and Geth when I get around to playing ME3 will be most interesting.
Well, as you've previously stated, you cared more for Liara than Tali, and remind me why we recruited Liara in the first game? Oh, right, she was studying protheans.
Though I do agree that was a pretty good DLC.
Though I do agree that was a pretty good DLC.