I am using an h3 neo 37 degrees now on both sides and yes it is awesome. I am supposed to post a review and a video of using it but playing venue is closed for a week or 2.
If you go with a faster 7 ply all wood blade you can still get the speed. It is more on the rubbers nowadays. Even with medium speed blades, you will still get a fast racket if you combine it with a fast rubber.
Kiri is the middle ply of Primorac carbon. You can tell by the grain. Balsa is softer and easily gets dented by your fingers and it has this lines when viewed at the sides.