My favorites in order:
1. Natsu
2. Erza
3. Cana
4. Levy
5. Juvia
6. Gray
7. Evergreen

I like all of them but Erza is my favorite.

I might be adding some of the Heart guild members on here. Ultear seems cool. And Zancrow...not because his name has Zan in it or anything. :3

I just love Ultear.She's one of my favorite characters.She actually redeems herself in the end of the"Tenrou Island"arc and plays a very important role in the"Grand Magic Games"arc.Her background story is so tragic that it actually made me cry.
Another Grimoire Heart member that I really like is Azuma because he is such a badass.He defeated Mirajane and Erza just barely managed to defeat him.

That's pretty neat. I'm gonna try to finish the arc so would you mind avoiding spoilers if you will. :P But it's neat no less. I just watched the episode with Azuma in it. He seems pretty cool so far. I'm on episode 104.

Why Gray AND Juvia? Why not just Gray? Or just Juvia? More preferably Gray?

Because at that time I liked them both just as much as each other. As of now Gray kind of dropped off of the list and into the least favorite category and Juvia is number 1 right behind Ultear.

I'm between her and Juvia !!!!