I think they are, I have them over 5 years they are internally damped and definitely well made, the will out last me without doubt.
I had an old cheap set for about 20 years and used to lend to fellows if they needed them, unfortunately at one stage I never got them back.I cannot remember who I gave them to last and anyone I asked said they had given them back.
Nobody gets the Davida set, if you want a bike checked bring it to me, but they do not leave my place.