Should i get a ps3, i touch, or xbox 360?

i want to get the ipod touch as a portable game system and as a texter because it has a free texting app. it could replace my dsi. or i could get an xbox 360 or a ps3. i want the xbox 360 becuz its got cool games like ac2, final fantasy, call of duty, and halo. i want to get the ps3 becuz it has a built in blu ray player, free online, and it has games like metal gear solid, splinter cell, ac 1 and 2 and codmw. and i dont really care about graphics, so long as the games are good. can someone help me decide which to get?