They look really great (as usual) ;)
Only thing that stops my eye for a little while is the rough wood. I would not expect material of such roughness in an interior. Even while coated, i would be worried of getting a splinter on touch :)
By the way, if heavy DoF shots converge slower due to the noise concentrated in blurry areas, just lower GI/AA balance value. That will focus more rays to AA (and therefore DoF) sampling. It allows you to balance the sampling out, so that you don't get areas in focus overly clear while areas in defocus remaining noisy.