I'm going with the Marantz. Gonna use an old AVR to power extra set of ceiling speakers for 7.2.4 (just sounds crazy). The more I look around I'm leaning towards the in wall M3s, or maybe even the in-ceiling speakers for the surrounds. It would certainly be a cleaner look with painted grills. I bought my LCR with the Sept coupon promotion, when my coupon comes in later this month I'll get the surrounds, but looking at 3 more pairs of speakers (ouch!).
It'll be interesting to see what info comes out this week.