I've been thinking about switching from a poly hybrid back to a multi, to get better tension maintenance. I was considering either Genesis Thunderblast, or Gamma Revelation pre-stretched. A few minutes ago, it occurred to me that a synth gut may play as well as a stiffer multi. The only multis I've played with were softer. What is the difference in playability between firm multis and synth gut? Is there a general difference in tension maintenance? Thanks in advance.