my nickname is uNatural, i'm a former player S4 and I've restarted playing at two week's.
I've played in servers like Spir, SWT, CoB, ELITE, SoD, FTP, Yakuza(ofc), etc etc.
What I saw is that your the best clan in action, but i don't have against every single clan.
I Play S4 1.0, 1.1 and TSS, I hope that one that I can join Yakuza has Trial.
PS: Sorry my bad english, I'm Italian...