Hi friends. I wonder your opinions about stiga mantra and donic bluestorm series. I’m using z1 turbo on my fh and mantra m on my backhand. Sometimes i cant provide a control on backhand side but generally i’m happy with’em. Im thinking to change my mantra rubber with genesis m. Im sure genesis ii spinnier than mantra. But i have doubts about speed. Does it enough speed ? I never try genesis before.