I do and I think they are wonderful ... they are the foundation of my ML 5.1 living room set up. They are perfectly complimented by a Motion 30, a pair of LX16s, and a Dynamo 700.
In addition to sounding great, I think the Motion 15, 20, 30, and 40 series are the best looking speakers I've seen. When my audio dealer accidentally sent me home with dark cherry Motion 40s (we ended up sharing the cost of the upgrade), my wife and I thought why not keep them.
I just submitted my set up to "Member Systems" ... I hope I did it correctly ... it should then be up there soon.
David, what other gear do you have to compliment your Motion 40s?