Everyone has a different opinion for sure. I've tried the zig zag a few times (for whole days) and just couldn't get to like it. It is awesome on ascent, and really nice control of friction but the thing that always gets me is how sensitive the thing is. You pretty much go into free fall if you sneeze! That might be an exaggeration but I've had a few experiences with ZZ where I bumped the device while working and scared the **** out of myself. Just normal stuff, reaching across it, using a handsaw or whatever. It's seriously sensitive, and if you're coming from a prusik that sensitivity is going to take some getting used to in terms of how you work. If you're new to climbing then you'll adapt to it easily.