I tried a few. Zola was the only one I got far enough with to actually get my site deployed.
Some of that might be that I learned stuff from my previous failures, but I really feel like the combination of the way it works and the Zola-specific themes are what worked for me.
In the spirit of "-10x is dragging everyone else down" I offer my take on +10x:
It's not about personal productivity. It's about the collective productivity that comes from developing and implementing processes that take advantage of all levels of skill, from neophyte to master, in ways that foster the growth of others, both in skill and in their ability to mentor, guide, and foster the growth of others. The ultimate goal is the "creation" of more masters and "multipliers" while making room for those whose aptitudes, desires, and ambitions differ from your own.