Hello all. I'm new to the forum, but I have both a K-1T DLX and the OHA, so I thought I would add my $0.02.
The OHA certainly doesn't have the Kanile'a "look" (i.e., gloss finish and ebony fretboard and head) and it wouldn't win a beauty contest against the K-1T, not even close. But the OHA is a player and I like the understated look of it (might be more in line with my playing skills). Although my K-1T is fairly new, the OHA still gets more use at the moment as I feel like I don't have to be as careful with it. I put on low-g phd strings on the OHA, which really brought the instrument to life - I was not a fan of the stock aquila strings. The K-1T still has the stock high g strings, but that will change soon (I have a set of phd high g string ready to be put on). My ears might not be as discerning as other folks here, but I find the tone on the OHA to be warmer compared to the K-1T. My concert and my wife's soprano are also made from koa wood, so I like that the OHA produces a different tone from the koa and mahogany wood combination - not better or worse, just different. After the string change, I don't find myself having to dig hard on the OHA to get good volume. I'm not good enough of a player to record, so I can't comment on how the OHA behaves in that setting. Overall, I would say that I still prefer the K-1T (from both a looks and sound perspective), but I think that the OHA (at $795+ new (with case) for a HI-made instrument from Kanile'a) is certainly worth considering given the material sticker price difference between the two.