so i decided to get the creative ddts 100-decoder for my xbox, i also need a speaker system and the choice is beetween Altec Lansing 251 or Creative Inspire T-5900 or logitech x530(or somethin else in that preice range)... i dont know wich one to chose so a little advice woud be much appriciated...wich one shod i buy? (i know all of them are realy cheap, but hey its gona be my first surround and since i dont know a thing about things like this i dont want to spend a fortune....)