A fellow clan member bought one of these Sound Blaster X-Fi Titanium HD 24 and was asking for suggestions on a nice 5.1 sound set up. He said he is looking at the Logitech z906. His question is will any decent home audio system work or are speakers such as the 5500s and 906s made specifically for PC gaming. He is afraid to get a sound system like this ONKYO HT-S3400 5.1 Home Theater System and find out that it is not capable of gaming audio. Personally I am not really into this stuff that much and wanted to know from you guys what would be good advise to give him. Your knowledge and experience is way above what I could learn in a short time to offer him. Thanks for any help.