There are other speakers of similar price -
Monitor Audio, Dali, Focal, Sonus Faber, Martin Logan Motion - few can deny that the B&W CM9 and CM10 sound very good and are well worth their money.
Both the
Monitor Audio Silver 6 and the
Monitor Audio Silver 8 have recently gotten very good reviews. The Monitor Audio SILVER 6 are about $750 each. The Monitor Audio Silver 8 are about $1000 each.
The
Monitor Audio Gold GX300 are about $4600/pr -
http://www.designeraudiovideo.com/monitor-audio-gx-300.html?gclid=CPqfge7DocMCFQYJaQodAQwAxA
I was at Best Buy Magnolia listening to the full CM line from Bookshelf to the largest Floorstanding. In all honestly, I like the CM better than the B&W 800 series. Every audition of the 800 series that I've had, but bass was too overblown.
They happened to have some Martin Logan Motion 40 speakers there and I gave them a listen immediately after hearing the CM series.
The Martin Logan Motion 40 were pretty impressive, near flawless in the mid/high and with very good bass for a somewhat small floorstanding.
Given how good they sounded, I would expect the Martin Logan Motion 60XL XT to be stunning speakers for the money.
The Martin Logan Motion 40 with a 5" midrange and two 6.5" bass drivers are about $2000/pr. They hold up very well along side the $4000/pr CM9. Though a quick check of Google indicates the price on the CM9-S2 has dropped to $1599 each, or about $3200/pr.
http://www.crutchfield.com/shopsearch/Martin_logan_Motion_40.html
http://www.crutchfield.com/p_839M60XTGB/MartinLogan-Motion-60XT-Gloss-Black.html
However, the Martin Logan Motions 60XT are $1499 each or roughly $3000/pr and have a 6.5" Mid with two 8" low bass drivers response down to a rated 35hz at -3db, which means certainly at least 30hz at -6db.
For the record, the CM9 are rated at 46hz at -3db, but they roll off slow and are also rated at 30hz at -6db.
So, there are certainly other speakers out there, all well worth considering. But when it comes down to the actual decision, you have to look specifically at your circumstance - the room size, they type of listening you will do, and many other factors that are unique to your. then try to find the speakers that fill those needs.
That said, the CM9 are pretty sweet speakers. I don't think anyone would deny that.
Steve/bluewizard