I'm dabbling in flamenco a bit and having fun doing it. I Own a gk studio negra as well as a Yamah cg171sf and I'm possibly going to end up selling one. I'm enjoying the yamaha a bit more because the action is much much better. It still has a bit to go on the saddle if I wanted to lower it more but I think it's pretty much perfect for me the way it is.
I like the gk too, although in terms of tone they sound pretty similar to me, the only problem I have with the gk is that the action is too high, for flamenco standards at least. When I got it initially, which was used for a good price, I took it to my luthier and asked to have the action lowered on the nut and saddle. He told me he can do it for cheap but that there wasn't too much saddle left to go. He lowered it as much as he could pretty much and looking at it, there's definitely not much more of the saddle to go down. I haven't measured the action on the 12th, however it seems noticeably higher than my Yamaha, more of how I would have my classicals set up. I don't know IF i need two guitars for flamenco given that I mainly just play it for fun, but is there any way to have the action on the 12th lowered any more? It does have a truss rod, and measuring it on the 7th it doesn't have more relief than the Yamaha, but I don't know if that would do anything with the action at the 12th. Also, the intonation on the GK is spot on so I don't know if messing with the truss would mess up intonation for me.
On a side note, I had another question if anybody has played both guitars. Looking at it from retail, the yamaha was 350 or so new, the gk is 650 I believe? The Gk looks real nice, and that's one thing I like about it, but does much justifity the price over the yamaha? am I paying that much more because of the electronics? I'm probably going to end up keeping the GK, probably not so much for flamenco though. Anybody have a preference between the two?