Like most people, I like DTS over DD.  Some of the newer DVDs are coming out with DD 5.1 and DTS 6.1 (either discrete or matrix).  For example, the LOTR trilogy and Gladiator.  My question is whether it makes sense to choose the 6.1 DTS track instead of the 5.1 DD even though I am only set up for 5.1. 

It probably comes down to how much the engineers are sending to the back channel (which I wouldn't know w/o a back channel) but I wanted to know if anyone else had the same dilemma.  Thanks.