I recently decided to type into Google every possible spelling of Chann Hann Hanu the name of the current Jewish festival, just to see how many respective hits each one received. Don’t ask me why, but this is what I got:
Can this please settle it? The overwhelming majority of sites favour graphemic representation of the final heh, and eschew (for the most part) representation of the initial het with “Ch”. I wonder if this is in order to better distinguish the word from “Christmas”, but I shall leave investigation of that question to one more bored than I.
Ace! Simply Ace!