You say you're and advanced rider but don't know that EST only fits on Burton ICS? Hmmm
I ride 2 sets of Flows. They're my choice for Jibsticks to be honest. Try M9SE's or for overall softness Quattros.
For 2 strap love my jib picks were Flux DS30s, K2 Nationals, Raiden Zero's, or Salomon Arcades.