Balleszabal He is a 30 years old kid and his dislike of high kick-point shafts is due to feel.
If he is looking for certain feel and launch characteristic of driver shafts, then, there is no substitute for hands on trial and error.
I would lean towards a softer X flex if he is looking for mid to mid high launch and a softer feel.
Remembering the HOF White shaft ( made in Taiwan ) has a soft X flex which launched mid-high and very playable.
Someone here had wanted to buy another one in the buy/sell section.
It was the HOF Whup N Shaft Proto ( Taiwan ). It had a pronounced spine, once you FLO the shaft it was very smooth.