>>20153874OU is pretty balanced now that the power creep has left the building. We're at the tail end of the first important suspect in Aegislash. DO NOT take the arguments on vp as the reality of the situation unless they cite their arguments with either high ladder usage stats of well reasoned arguments. It could go either way and it's completely up to personal opinion, which is why it's the first important suspect.
UU is extremely good right now. It's like gen 4 OU but without the really broken stuff. I suggest trying it out.
On cart we have bank now if you for some reason want to play there. Keep in mind the easiest way to gen mons is now defunct since Nintendo killed the wifi connection on Wii and DS games.