Here's my vent to let out steam at the stupidity for people hating Double Team.
Double Team is NOT unbalanced. You may feel that its cheap if your team isn't prepared against it. But then again, an EV-Trained Choice Scarf Heracross can be just as cheap if you're a casual gamer because you're not prepared for it unless you just happen to have a faster Pokemon that can use a Flying Type move, which would be VERY unlikely.
It's balanced by the MANY COMMON unmissable moves, such as Aerial Ace, Magical Leaf, which are both seen very commonly. There are also many other viable options, such as Swift, Shadow Punch, Faint Attack, Shock Wave, Aura Sphere, and Vital Throw.
Other moves can also negate its effects, such as Odor Sleuth and Foresight whose SPECIFIC PURPOSE is to negate the effects of Double Team and its other correspondents which do the same effect, such as Minimize.
Not to mention, other moves can remove any sort of status effect such as the common HAZE, WHIRLWIND, ROAR.
Double Team is balanced more than you fools can say. There are SOOOOO many options to counter this move, yet obviously you label it as 'cheap' because it's difficult to counter it unless you have at least ONE (Yes, just 1 will work fine.) way that was listed above. Haze, Whirlwind, and Roar are the easiest options to choose and also work for any other status change which are also common. I'm sure that among those people who label Double Team as cheap are those who even dedicate an ENTIRE POKEMON to counter another, such as a Sub-Punching Tyranitar to counter Blisseys. Why not dedicate an ENTIRE MOVE on just ONE POKEMON to counter Double Team, huh? I'm sure people woudn't complain if they had a Whirldwind Skarmory on their team, because they can easily counter any Double Teamer.
The stupidity among banning Double Team in tournaments is BEYOND stupidity. It's just plain retarded. However strong or well-breeded their Pokemon are, they consider Double Team to cheap? Well, at least learn how to use the cheap counters against it instead of crapping out and banning the move from use because you're too stupid to counter it.