Peter Lieberman: Maui Music Ukuleles
Peter Lieberman is a Maui based luthier who makes ukuleles under the name of Maui Music.
Looks wise, their most distinctive feature is the elongated sound hole (echoed by an unusual hole in the headstock). His most famous range is the K Range of ukuleles endorsed by the Hawaiian musician Willie K.
I haven't played them myself, but I have heard very good things about them.