The Martin arrived and it's in almost mint condition. There are a few teeny tiny marks here and there, but at first glance you might think it's brand new. I got a heck of deal. It has that bell like tone that older Martins have too. I've been playing it for about an hour and people are going to think I'm crazy, but I still prefer the KS-5. The action on my KS-5 is lower at the 7th fret than the Martin. The Martin doesn't have "high" action, but it's higher than what I've been playing lately, so it just feels slightly harder to play. I guess I'm just too picky when it comes to string height. I wonder if there's a way to adjust the Martin without hurting the value? It doesn't look like the bridge can be adjusted easily.
So Shane, if you are wanting to try a soprano, you get two thumbs up from me for a Kiwaya. That said, the new KTS-4 is going back to Elderly. Its action is a bit high for my liking too. It's probably set up just like this Martin (I can't compare because the Kiwaya is already boxed up). I figure keeping the vintage Martin over the new Kiwaya is a no-brainer. I won't lose any money on it if I ever decide to sell it.