I don't think you can really buy speakers on paper specs, you need to listen to them.

Kef do a whole range of custom build speakers, this is not too far away...

http://www.superfi.co.uk/p-4048-kef-ci1302qs-speaker-single.aspx

I have some Kef in wall speakers in my bath room. It;s worth remembering that some kind of sub will be needed as building speakers into the wall just suck the bass out of them. In my experience anyway.

Cheers

Cris