I am in the process of finalizing some wood choices for a custom ukulele to be built for me, and have settled on myrtle for the back and sides, and port orford cedar for the top. Both have excellent tonal and resonance properties, and both (at least on paper) offer the right combination of a heavier, denser hardwood for the back and sides, and something light but stiff for the top soundboard. Any guitar people out there can probably chime in, as well as any woodworkers.
The builder has even sent me some pics of some wood choices he has available. I like the look of this particular one for its consistency and striping and overall lighter hue (see image2)
However, take a look at the board below, especially the left half, with its extravagant and bold flame like curl (see image 1)
Feel free to comment. Feel free to also share your experiences working with different woods, whether it be with speakers, instruments/guitars, or in general.