I would discount the Kef's, you are far to close, and they would be fatiguing in my opinion, The Harbeths would work if you like the sound, Amphion Argon 1 would also be on my list. Two other speakers that you can purchase cheaper than here in the uk, Klipsch RP600's, maybe a little bit to much if you're working and I've never heard a pair of Revels that I have not liked.
Good luck in your search.
Good luck in your search.