Turns out there is a new white one out on tour that is well liked by pros. Besides Mr Berdych there are upcoming Dunlop players using their Hydratac overgrip. I've used them myself, they last quite long, and are a sort of tackier version of Prince Duratac I guess might be a good way to describe them. I prefer to use bare leather, but these have won out over Tourna for me when the humidity hits. They supposedly also have a new German made poly on the way out which is comprable to Luxilon. This one I'm waiting for samples to try and hope it is good.