G-String ukes are outstanding. I own a soprano, which I think has great sound, and have played several concerts during a trip to Hawaii early this year. Those were the best production concerts I've played (even compared to KoAloha) and I might get one some day (I have too many ukes right now).
I'm going to sell my G-String soprano pretty soon because I've determined that I'm not much of a soprano guy. I'll probably post it here too when I'm ready to sell it.