I am very interested in getting either a concert Kanile'a or Koaloha and would like comments from people that have owned them regarding sound, action, neck width, play ability, etc. The first time I heard a Kanile'a on You Tube I was blown away by the warmth, harmonics and bell like sounds. But after I heard the Koaloha I am having a hard time deciding. Which one do you think sounds warmer or richer?