Before I started using the IG Speed I was using Flexpoint Radical OS's and I loved them. I've also played with the Ti. Radical OS's and a bit with the i.Radical OS's but the Flexpoints were my favourite.
Racket: Head Youtek IG Speed 18x20
String: Luxilon Big Banger ALU Power 16 (mains), Technifibre X-One Biphase 16 (crosses)