Ever since coming in second place in a Pokemon tournament I participated in about four months ago (word to the wise: never underestimate Tailwind, especially if you have a speed-oriented team against a defensively-oriented team), I'd been hard at work trying to improve my team for the next. Below is the current results of my efforts. I've had a fairly successful run with it, but I'm totally open to any improvements I can make on it.
Gallade @ Expert Belt
Adamant
Steadfast
252 Attack/252 Sp. Defense/4 Speed
-Close Combat
-Psycho Cut
-Leaf Blade
-Shadow Sneak
Max Sp. Defense and Speed IVs, if that helps out in any way.
Magmortar @ Power Herb
Modest
Flame Body
252 Sp. Attack/252 Speed
-Flamethrower
-Solar Beam
-Thunderbolt
-Psychic
Max Sp. Attack and Speed IVs.
Scizor @ Flying Gem
Adamant
Technician
252 Attack/252 Defense/4 Speed
-X-Scissor
-Bullet Punch
-Acrobatics
-Brick Break
Max Defense IVs.
Hydreigon @ Choice Specs
Modest
Levitate
252 Sp. Attack/252 Speed/4 Sp. Defense
-Dragon Pulse
-Dark Pulse
-Flamethrower
-Surf
Max Speed IVs.
Gengar @ Focus Sash
Timid
Levitate
252 Sp. Attack/252 Speed/4 Sp. Defense
-Shadow Ball
-Sludge Bomb
-Thunderbolt
-Energy Ball
Max Sp. Attack IVs
Garchomp @ Life Orb
Jolly
Sand Veil
252 Attack/252 Speed/4 Defense
-Outrage
-Earthquake
-Stone Edge
-Brick Break
Max Attack and Speed IVs.
Gallade @ Expert Belt
Adamant
Steadfast
252 Attack/252 Sp. Defense/4 Speed
-Close Combat
-Psycho Cut
-Leaf Blade
-Shadow Sneak
Max Sp. Defense and Speed IVs, if that helps out in any way.
Magmortar @ Power Herb
Modest
Flame Body
252 Sp. Attack/252 Speed
-Flamethrower
-Solar Beam
-Thunderbolt
-Psychic
Max Sp. Attack and Speed IVs.
Scizor @ Flying Gem
Adamant
Technician
252 Attack/252 Defense/4 Speed
-X-Scissor
-Bullet Punch
-Acrobatics
-Brick Break
Max Defense IVs.
Hydreigon @ Choice Specs
Modest
Levitate
252 Sp. Attack/252 Speed/4 Sp. Defense
-Dragon Pulse
-Dark Pulse
-Flamethrower
-Surf
Max Speed IVs.
Gengar @ Focus Sash
Timid
Levitate
252 Sp. Attack/252 Speed/4 Sp. Defense
-Shadow Ball
-Sludge Bomb
-Thunderbolt
-Energy Ball
Max Sp. Attack IVs
Garchomp @ Life Orb
Jolly
Sand Veil
252 Attack/252 Speed/4 Defense
-Outrage
-Earthquake
-Stone Edge
-Brick Break
Max Attack and Speed IVs.