I've been asked to shoot a doc where they are looking for a lot of handheld, probably with a zoom lens.  They also want "cinematic" quality, ha! I've been working the Alexa for many years, and it's clearly not the tool for this job.  So, I'm welcoming your suggestions for something light enough to keep on my shoulder for long periods, and a viewfinder good enough for me to focus myself.  Something like a Canon C300 with it's funky rear mounted viewfinder doesn't seem to fit the bill here ?