My list:
EU:
1) #EU Forgotten. Their teamwork is great from what I have seen, and they love to play together and have fun together which is what makes it such a great clan.
lEADER: @
xExtract
2) #EULegends. Their a great clan, with a lot of great PvP'ers. From what I've seen, It looks like they have loads of fun together.
But I have to rate EUForgotten before them :c
Leader: @
NoahSailer
3) #Majestic. They are the most underrated clan out there. They are amazing people and amazing PvP'ers.
Leader: @
Henkcraft
4) #Team Achorn. I haven't watched them play, but from their members list, They look like a good clan.
Leader: @
ImHazzasMinecraft
5) #Ronins. This clan only started today, But it has a lot of very skilled PvP'ers, and I think it will go far.
Leader: @
BeppeJr
6) #Valiant. They have been known for cheating, But I have never watched them play so I wouldn't know, But they seem to be a good clan.
Leader: @
DerpyDash11
7) #PenguinSquad. They are a decent clan, with a lot of good members. They could work on their teamwork though.
Leader: @
xXExoticPenguinXx
8) #TeamSypher. They are an Ok clan, They have lost a lot of clan wars, but they are still amazing people <3
Leader: @
ZniZ97