for either wii, ds, or gamecube

if it's like 50 dollars i'm not buying it

for wii i already have brawl, spm, and smg

for gamecube i already have melee, sa2b, sadx, pokemon xd, pokemon colloseum, mp4, windwaker, tp, sms, kirby airride, sonic heroes, shadow the hedgehog, and ttyd

for ds i already have d/p/p, soulsilver, kirby canvas curse, kirby super star ultra, acww,  kirby squeak squad, sonic rush, sonic rush adventure, pmd blue, pmd darkness/time, phantom hourglass, sonic chronicles the dark brotherhood, drawn to life, yoshi's island ds, and pokemon ranger

so what should i get?