B&W speakers - which ones?

I fairly new to B&W and just got my first pair of CDM7 SEs.
My receiver is a Pioneer Elite and may be getting a new one this week with the newer D3 amp.

What would you recommend for my surrounds? I currently run 7.2 but the new receiver does 9.2.
I have listened to the new M1s at Best Buy which sound good but I am also considering the other models like:
DM600 S3
DM601 S3
LCR60 S3 center

Thanks for any help/advice.