I bought a Bluewater Koah from John a few years back.
Couldn't be more pleased with the gun. Excellent craftsmanship, balance and a straight shooter. Not shot many others to compare it too, but it was my choice when I was digging thru different manufacturer's available.
I'm sure the newer models are even better.
I did spot these guns after I bought, and would have considered one of them.
www.herranenspearguns.com
Phil looks be on his game as well. Just food for thought.