I'll stick with Black.
The RKC design works so well on black. I like the HKC design, but not the white field. The fist works. Some sort of edge around the lettering and the bell would let you lose the white field entirely. THAT would be really sharp.
My thread "Guest User? Really" prompted some 6 pages of discussion on why Pavel's user account had been changed to "Guest User" status. John Du Cane answered in a forthright manner, and I thanked him for his professionalism in this very forum.
That entire thread was removed from the forum on or around August 26. I've been an HKC and an active, outspoken member in good standing for some 3yrs now, but I don't support this sort of censorship. Look for me on the public web.
The RKC one is the way forward.