what should i get??????

for x-mas im either getting xbox live, a router, networking adapter, mass effect, assassins creed, cod 4

or mass effect, assassins creed, orange box, and about3other games

i have the 1 month free live, i borrowed cod 4 from my friend i love it and i like the online play but i dont know what to do

ps. im only getting cod 4 if i get live and i cant beat the game because his disk is screwed up to where you cant play the second level