I switched over to Hugo for my personal blog and a side project from Pelican a couple months ago. The speed is unparalleled: anecdotally, it generates a couple thousand pages in ~400ms (which would take an order of magnitude longer in Pelican). However, dealing with ACE templates was like pulling teeth, and I was considering switching away just to save me the stress; I'm glad to see that they're working on improving the actual templating process (and that ACE apparently supports base templates now?)