I agree with just about everything folks have posted here. That's why I made the title "Your Favorite ..." and not what makes a bell-like sound or how can any uke be played to sound more harp-like.
If only the wood mattered, some other folks I've spoken to say a spruce top is a good place to start. So, as usually happens, I've upped my amount to spend
and am now thinking of an Opio spruce/acacia or a Rebel double cheese. I'll probably go with the Koaloha since I don't have one of theirs and am interested in the sound from that bracing.
Thanks to everyone for their comments. All help is appreciated.