Help a Noob in Need? :D

[Irot_Rebod]

So... I've never actually been that great at Pokemon. I mean, I hold my own playing the game and whatever, but sometimes when playing against my friends, I get destroyed. Laughably.

My friends invited me to a Pokemon tourney that they are hosting after HGSS comes out. I figured, why not, the worst is I get thoroughly embarrassed. XP The tourney is divided into three sections... there are OU, UU, and NU sections. Pokemon are expected to be level 100. For one reason or another, no legendaries are allowed. I was wondering if you pros out there could give me a few tips on how to improve the teams I've set up:

- OU Team -
Gengar @Quick Claw
Hasty 255 S. Attack / 255 Speed
Levitate
HP 60, Attack 65, Defense 60, S. Attack 130, S. Defense 75, Speed 110, Total 500
Dream Eater, Hypnosis, Mean Look, Substitute

Gyarados @Choice Band
Jolly 255 Attack / 255 Speed
Intimidate
HP 95, Attack 125, Defense 79, S. Attack 60, S. Defense 100, Speed 81, Total 540
Aqua Tail, Dragon Dance, Earthquake, Outrage

Heracross @Expert Belt
Jolly 255 Attack / 255 Speed
Guts
HP 80, Attack 125, Defense 75, S. Attack 40, S. Defense 95, Speed 85, Total 500
Close Combat, Megahorn, Shadow Claw, Stone Edge

Metagross @Wise Glasses
Brave 255 Attack / 255 S. Attack
Clear Body
HP 80, Attack 135, Defense 130, S. Attack 95, S. Defense 90, Speed 70, Total 600
Earthquake, Meteor Mash, Psychic, Stealth Rock

Snorlax @Leftovers
Relaxed 255 HP / 255 Defense
Immunity
HP 160, Attack 110, Defense 65, S. Attack 65, S. Defense 110, Speed 30, Total 540
Giga Impact, Gunk Shot, Seed Bomb, Substitute

Tyranitar @Expert Belt
Adamant 255 Attack / 255 Speed
Sand Stream
HP 100, Attack 134, Defense 110, S. Attack 95, S. Defense 100, Speed 61, Total 600
Aerial Ace, Avalanche, Earthquake, Stone Edge
- End Team -

- UU Team -
Drapion @Quick Claw
Adamant 255 Attack / 255 Speed
Battle Armor
HP 70, Attack 90, Defense 110, S. Attack 60, S. Defense 75, Speed 95, Total 500
Aqua Tail, Cross Poison, Night Slash, Toxic Spikes

Kabutops @Quick Claw
Adamant 255 Attack / 255 Speed
Battle Armor
HP 60, Attack 115, Defense 105, S. Attack 65, S. Defense 70, Speed 80, Total 495
Night Slash, Stealth Rock, Stone Edge, X-Scissor

Porygon-Z @Wise Glasses
Modest 255 S. Attack / 255 Speed
Adaptability
HP 85, Attack 80, Defense 70, S. Attack 135, S. Defense 75, Speed 90, Total 535
Lock-On, Psychic, Tri Attack, Zap Cannon

Rhyperior @Expert Belt
Adamant 255 HP / 255 Attack
Solid Rock
HP 115, Attack 140, Defense 130, S. Attack 55, S. Defense 55, Speed 40, Total 535
Earthquake, Hammer Arm, Megahorn, Rock Wrecker

Spiritomb @Quick Claw
Quiet 255 HP / 255 S. Attack
Pressure
HP 50, Attack 92, Defense 108, S. Attack 92, S. Defense 108, Speed 35, Total 485
Dark Pulse, Destiny Bond, Shadow Ball, Toxic

Tangrowth @Leftovers
Quiet 255 HP / 255 S. Attack
Chlorophyll
HP 100, Attack 100, Defense 125, S. Attack 110, S. Defense 50, Speed 50, Total 535
Ancientpower, Giga Drain, Leech Seed, Toxic
- End Team -

- NU Team -
Banette @Quick Claw
Jolly 255 Attack / 255 Speed
Insomnia
HP 64, Attack 115, Defense 65, S. Attack 83, S. Defense 63, Speed 65, Total 455
Destiny Bond, Shadow Claw, Sucker Punch, Will-o-Wisp

Exeggutor @Leftovers
Modest 255 HP / 255 S. Attack
Chlorophyll
HP 95, Attack 95, Defense 85, S. Attack 125, S. Defense 65, Speed 55, Total 520
Leaf Storm, Leech Seed, Psychic, Toxic

Glalie @Quick Claw
Naïve 255 HP / 255 Speed
Inner Focus
HP 80, Attack 80, Defense 80, S. Attack 80, S. Defense 80, Speed 80, Total 480
Earthquake, Ice Beam, Super Fang, Toxic

Luxray @Choice Band
Adamant 255 Attack / 255 Speed
Intimidate
HP 80, Attack 120, Defense 79, S. Attack 95, S. Defense 79, Speed 70, Total 523
Crunch, Ice Fang, Roar, Thunder Fang

Pinsir @Expert Belt
Jolly 255 Attack / 255 Speed
Hyper Cutter
HP 65, Attack 125, Defense 100, S. Attack 55, S. Defense 70, Speed 85, Total 500
Close Combat, Stealth Rock, Stone Edge, X-Scissor

Sharpedo @Quick Claw
Adamant 255 Attack / 255 Speed
Rough Skin
HP 70, Attack 120, Defense 40, S. Attack 95, S. Defense 40, Speed 95, Total 460
Ice Fang, Night Slash, Waterfall, Zen Headbutt
- End Team -

I realize that one of my biggest faults is that I favor physical attack over special attack, but that was more coincidental as when I was first picking the Pokemon from each tier, I was just choosing ones that I liked and that varied in typing. I'm not sure what to do about that issue without completely changing my teams. s;

Anyways, if anybody could please give me some constructive criticism that I can work with, I'd really appreciate it. I really wanna surprise my friends and not be a complete failure this time around. ;p

Thanks in advance!
- IR