Shaft upgrade from an old kaili

You're trying to put the cart before the horse. If you're going to get fit for a new driver that is obviously significantly newer than what you have now, then you need to go through the process and let the fitter guide you.

There has been alot of improvements to shaft technology since this shaft was released...you will be surprised when you hit the new GT's that the configuration (shaft included) may be dramtically different than prior drivers.

Once you are fitted, if you still feel this shaft is what you want to baseline with then ask your fitter....thats what they are there for.

Cheers

If you're referring to Graphite Design Tour Ad, there is no comparison. But that's just my opinion.
Hopefully your fitting will have a full selection, and they can tell you the pluses and minuses of each shaft and how it affects your swing. For general research, the GD website does a great job of describing each shaft's characteristics.

The PX Denali is kinda spot on for the old Blue Board profile, so that would be a great place to start. If you’re not opposed to the extra money, definitely give Ventus Blue and Red a go. I played a Diamana ‘Ahina from the time it was introduced until getting to a Ventus Black a few years ago and have been very happy with it. Follow the fitter and best of luck!