I like ivory and ivory micarta, carbon fiber, titanium, and timascus for handle materials. I prefer a hand rub satin blade.
Of course Ti and Cai engraving always rocks!!
BE: Why do you think ZDP-189 is so much better then all the other steels out there like S30V, CPM154CM, BG-42 and, hell, ATS-34? I haven't used the ZDP-189 and am curious. Personally, I don't find a huge difference between any of the above, it really depends more on the heat treat is what I have found.