Great! Awesome. I did not know such website existed. To summarize the website below:
Degree of sponge hardness:
54°: Vega CHINA
47,5°: Vega X, ASIA, PRO, INTRO, LPO
45°: Vega TOUR, JAPAN
42,5°: Vega EUROPE, ASIA DF, SPO
40°: Vega ELITE
37,5°: Vega EUROPE DF
My little note: I thought...