Well, i got the game a while ago and completed it in 5 days, and now my team consists of:
Arceus Level 100 w/Icicle Plate (got this of my pal
who uses hax to get this which is the only way unfortunately at this time)
Breloom Level 89 w/Quick Claw (also my favourite poke)
Lopunny Level 61 w/Luck Incense (goes well with Breloom...!)
Hero(Machamp) Level 100 w/Fist Plate (from Sapphire)
Hitmonlee Level 100 w/Razor Claw (from Leaf green)
Click Level 83 Kricketune!!!! w/Scope Lens (this one is...ownage...muhahahaha fear him)
And thats it. I got Arceus from my friend who uses haxx but apart from that everything else is genuine. Breloom pwns j00 411!