Bitstream

[katiehlvr1]

I know this topic is always being talked about however some say this and others say that. Would just like to clarify.
I have a digital coaxial and standard rca jacks that are going to my BR back to the receiver. Am I better to use the two rca's and set to bitstream and always use 5.1 for both digital coaxial or rca's? I am trying to make it as simple as possible. I would just like to know what to set the Samsung 1400 on (pcm or bitstream) and always use standard 5.1 or dts?
Can someone be kind enough to tell me what route to go with?
I do notice that when I have my 2 rca cables in and select looseless audio it sounds much louder and clearer than 5.1 but not sure if I am getting the real sound effects if I just turn it up more using straight 5.1.
Any help?
thanks
Corey