Haha, Niles was admittedly my favorite at first, too, but every character really comes into their own, and now, I think I'd have a hard time picking a favorite. Like you said, everyone's loveable, but everyone's genuinely flawed and real.

And oh, that episode. XD How Gil's character keeps coming back, and how Niles kills everyone off out of spite. I'm LOLing just thinking about it.