The NS has a flat fingerboard, like the Stick.
For me, especially when playing at the far end of the neck, the flat radius and the shape of the NS neck caused me pain when playing. I tried various postures for longish amounts of time, but it always came back to that. I loved the NS as an instrument, for it’s range and sound, and with the exception mentioned, its playability. But bad wrists and the neck did not go together well.
So, maybe the U8 has slightly thinner and less wide neck and some radius. I have to try it.
You mean you got pain with tapping at the end of the fingerboard because the strings are further away from the neck higher on the fingerboard? I am trying to understand why a flat radius causes pain.
The U8 or T8 is nice but besides the basic one pickup model they are really expensive.