5.1 is great, and especially with a good DTS version of it.

I went with the Yammy 1400, mainly because I couldn't find enough that the 2400 differentiated to justify the extra $$$. I've been really pleased with mine. Good luck with the world of 7.1. I ended up turning the levels up higher on the rears, then the surrounds -- and, it seem to help.

In the 5.1ex films -- the extra setting on the Yammy amp help bring out those rears -- even using it for music -- I've fuound that "neo-Music" setting really nice.

Anyway, yea - I had to laugh when I saw the Dirty Dancing movie in 6.1 -- I'm going to get it for my wife though -- so I'll be interested to hear how the mastering was done for the rears.