center is always a good idea, and like dukes said, if you break in the KEF's properly then you won't really feel the need for a sub. unless of course you want that extra bit. I have two subs setup but that's just because i'm an audiophile.

kinda off topic but related to home theatre

r optical spliters like these directional? or are optical signals bidirectional so i can use that "splitter" to combine 2 input into 1 output or 1 input into 2 output?

http://products.ncix.com/detail/cabl...54103-1684.htm

Anything using fiber optics is directional and has to be due to the technology behind it. This is due to the diplexer/multiplexer in there. I'm guessing that one is for splitting one source to two outputs.

If you use it the other way, the coding will mix into each other and get jumbled up so then the receiver won't be able to understand the information (audio). UNLESS of course you only have ONE source on at a time, and make sure the other one is not emitting any information at all.

so, if i hook up my ps3 and 4 to the splitter and the other end goes into my amp or turtle beach headset, as long as i have 1 source on at a time it should work n not interfere with each other?

yes, however, if its an active coupler(multiplexer), it will only work one way, but that's too cheap to be an active one.

Yamaha 7 Channel Network Receiver (RXV1075-B) : Home Theatre Receivers - Future Shop

I picked up the Receiver when it was on sale for $799 and the sub below

Klipsch 10" Powered Subwoofer (SW110B) : Subwoofers - Future Shop

I am very impressed with the system so far. Just need to upgrade my Logitech speakers now..lol