What Xbox 360 game should I get? if you could read. but if not, skip to the last paragraph.=)?

I have:

Call of Duty Black Ops - Its very addictive and Its pretty fun I play about an hour or 2 a day

Halo Reach - Its okay when i play online with my buds but if im playing alone, than i dont even take a second look at the game while im digging in my backpack for black ops.

Split/Second - Its not amazing its not bad,its fun racing friends and sometimes online and story mode is okay. I play it every once in a while when i grow tired of black ops. (thats usually when i rage quit which is almost everyday)

Ive had:

Burnout paradise - it was okay after a while i got tired of looking for every billboard or secret gates and getting new cars. online was no fun beacuse none of my friends had it and everyone else had way better, faster and stronger cars.

Need for speed hot pursuit - it was fantastic online, but i couldnt costumize cars and the career mode was repetitive and boring.

Ive rented or tried out:

Fallout 3- I didnt like it at all killing people at first was okay but after that it was boring and repetitve and it gave me a headache

Red dead redemption - this was pretty fun messing around online but the story was like fallout so i gave it back to my friend. he still thinks i should get it so we can play online together so im thinking about it.

Games ive liked on other systems;

Littlebigplanet - fun, amazing and it was unbelievable online and when building my own levels.

if it was on xbox i wouldnt be asking this question right now

Modern warfare 2 - me playing Black ops 1 year ago thats all i have to say

tekken 6 - ive really only played it for more than an hour when friends were over but its blast waiting for the controller to get to me so i can annihilate everyone. its definitely a game i would never give/ trade away though

grand theft auto - only part i liked was free roaming and have 5 stars while on a 20 story building dropping grenades onto the streets below filled with cops and innocent civilians and taking down helicopters by sniping the pilot. this game would mean nothing to me without cheats though. i just dont wanna do all that hard work for an ak47 or a rocketlauncher

Im only gonna talk about this next one because it was just that amazing:

Pokemon firered, diamond, and platinum-

I love these games so much, they are never boring, the battles are intense evolving and leveling up pokemon is satisfying, finding lengendaries and rare candies is also very fun. honestly, i could play for days without stopping (at least til the game is over) this is really the only story mode in a game that i actually could wait to keep playing. i sold my ds so i cant play pokemon white or black =*(

So basically i like first person shooters, leveling up is a must have if im gonna play a story mode, games i play should have fun online experiences, they need guns, usually free roaming/ running, alot of action or at least a good plot. i dont like mid evil themes or old themes like fable, assassins creed was okay i guess but got boring.

Ive been thinking about getting gears of war 3 because i hear they have great online now and the game just looks fuking amazing like halo and call of duty combined.

i loved littlebigplanet because the fact that and i can buid stuff using the games materials and my creativity and i canplay others levels and share my levels online and share with friends. halos forge was just way too confusing. call of dutys custom game mode options was okay but lacked alot of things.

pokemon was amazing because of the leveling up, evolving, having my own team that i trained and can control.

kinect also sounds fun with friends and family. some of my friends say its amazing and their 15 - 20 years old. their athletes too not even not it all geeks. im 13 so i think i can trust them

sports games like nba 2k11 and madden 11 could be fun too i played the demos.

plz take what i described into thought and answer by that.

so i like leveling up, shooting, free running, fun online multiplayer, fun split screen/ multiplayer, alot of action, and games where you can be creative and do things like create the things that you use in the game.

thx for all of your help