I've never actually climbed on a zigzag, but have played with one set up on the ground. VERY smooth. I bought a Unicender instead so I can switch to stationary rope as well. I climb 90% moving rope so a zigzag may have been a better purchase. (this was over a year before the release of the Akimbo...which sounds very nice, but maybe just a little finicky to get dialed in to the rope and climber specifically). I'm stuck in the middle of moving and stationary. I like ascending with stationary rope, but prefer moving around the tree with the moving rope (doubled rope) system. My friends who are all stationary tell me I just need to get used to it. Maybe similar thing the OP is going through. I like what I am used to, but know there may be "better" options out there!
Have you tried the zigzag with either a Rope Wrench or Chicane for stationary rope?
Have you tried the zigzag with either a Rope Wrench or Chicane for stationary rope?