i own a concert mahogany from mainland and a tenor mahogany and i can't say enough postive things about them, non uke players and uke players alike ALWAYS comment on how warm and bright the tone is on my mainlands, and its really true...warmest fullest resonating sound i've heard on any uke in the price range and i've played kamakas and koalohas i don't like nearly as well...never played a kala, though i know the sound quite nice...but i would go mainland, you're also supporting a UU members wonderful business, i can tell you first hand HoosierHiver, Mike is absolutely wonderful to deal with, and will answer any questions you have about his instruments. I'm not done. The gloss finish is unbelievably nice on the mahogany and the rope binding gives a very unique and charming look. i've never met an un happy mainland owner. the One downside is that the action is a tad high, but that is a cheap fix for a music shop, or a brave owner....MAINLAND all the way