Glad you're happy with it, ArcticHaze!
At one point you said it's nearly the equal of a discrete 5.1 system, and elsewhere you said equivalent. Maybe when you live with it longer, and experiment with it, your opinion on that will become more refined.
One thing I would do eventually is put the sub near the TV, and swap out the satellite cables with longer RCAs, so that you can maintain their rear placement. I think this would create a fuller, more coherent sound, and eliminate any possible directionality from the sub.