According to Pingsunday, the 2nd Gen w968 is actually the national version of the HL5x. So the reason it is faster is because the core is thicker. Can anybody confirm if this is true?
That is a hard no. W968 cannot be HL5x, that is a different structure (it would have a different number), also the X version of the DHS blades are for players who lack hitting power. The X versions are not intended for pros. Don't misunderstand they are very good too, but the thicker core is compensation for using lower-quality wood.
I am fully convinced that blades with ayous core have to have very little and few pores to be good quality.
Michael, if you want to get a good cheap blade you can either go to a store which has dozens of blades, and you can inspect them with your own eyes, or ask a blade maker to select you a very dense ayous core. I think with ayous it is fairly easy to select since it's visible. In a store you can select for example a Fang Bo carbon that has very few and little pores and that can be a really good find. You can use this with BTY IF blades, or Stiga blades since they mostly also use ayous core.
I don't know what to look for in kiri core, but what I know from the hundreds (if not thousands) of Golden Viscarias I saw being sold on wechat is that I never ever saw a Golden Viscaria below 90g, and most of them are more around 95g, while standard Viscarias can be had at 85g, and most of them are sub 90g, this is not a coincidence.
Electronics manufacturers also bin their components, and to take a super easy example if you look for a 1kOhm resistor with 1% tolerance you need to buy one with that spec, because you won't find any among the 5% tolerance parts.
With blades there is a bit of more variance, you can look for an ugly ducking top ply with a good core.
That being said DHS and other brands are not idiots, I think my W968 provincial has a not particularly pretty top limba ply, but has a really dense core so it did not become a HL5 or FB2 blade, it is still W968 provincial.
And also Chinese or Japanese or German etc blade makers are not stupid, if they see a good piece of trunk they know what will become of it.