Okay I just have to say I love this forum, I just got a new Koaloha Concert Acacia Opio and I wasn't really feeling the strings it came with. After reading reviews on here, I decided to try the Daniel Ho's PhD low G set and Wow! I'm not an expert at ukulele, still learning, so maybe this is known to alot of people. But if not, and you have a Koaloha concert Opio, I'm just confirming that the PhD strings are like MAGIC! I highly recommend!!