For me i put 2 variable into messuring this for me.
First one is the plain block. How hard from the rubber does a loop for example jumps from my simple block. No countermovement from me, just me holding the racket against the shot.
Second is a little counter movement like a really touchy punch. Not a punch attack like Aruna^^. If one of these variables gives me an easy time bringing the shots back, i count a rubber as spin insensitive.
For example i have strong issues with blocking either way with Hurricane 3 and Hurricane 8 rubbers. They usually need a strong angle and a strong countermovement. If you are doing nothing to just a little the shots do what they want in my experience. The bounce of is kinda disgusting and hard to get along with it.
The Xiom Vega Pro is pretty much the same as the Tenergy 05, but are pretty spin sensitive with the first variable. If you do nothing the reaction from opponent shots are quite strong. But with just a slight adjustment (second variable) and a little movement against the ball i can completely control a shot.
So therefore for me i dont really count them as strong spinsensitive, maybe a little.