I have had both tenors strung with Uke Logics with a wound low g. I just sold my (2010) Kamaka HF-3 earlier this week. They are both great. Don't think you could go wrong with either. My Koaloha is the anniversary silver series so it is the new design. If I was to compare the two, I would say sound-wise, they are more similar then different. Very smooth, resonate, and on the louder side. I think the Koaloha is a little more punchy and had slightly more volume. But the Kamaka sounded a little more fuller. I think it because the body is bigger, both wider and deeper. My Koaloha looks like it could be a concert when they are next to each other. Both have great playability and are very comfortable. I agree with ukecaster that the string spacing might be tighter on the Koaloha compared to the Kamaka. A little weird at first but I got used to it.
You commented on quite times. Not sure if you asking if its good for playing quietly? I would say yes or maybe. But what is nice about both is that you can step on it and play super loud. I don't really have that same experience with my Kanilea.
You might ask why did I sell the Kamaka. I have a bad case of UAS and commissioned a custom uke and wanted to offload one of my ukes to help pay for it. To me, both sounded similar but I favored my koaloha more because it was newer and had the ebony fretboard and headstock. Really superficial but that's what happened.
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