Emm i don't really have a top 3 anime but
Finished Anime:
1) Deathnote
2) Hellsing
3) Elfen Lied
Ongoing Anime:
I can't decide XD
Emm i pretty much like the four ongoing anime i watch Equally
Naruto(Shippuden included)
Bleach
D.Gray Man
One Piece
and out of the few choices you gave us...