I took the banca boat today. It was Benso 2 with 70ppl capacity. They had Overcomer going as well but it was a smaller boat (40ppl cap).
We were maybe around 25pp traveling today and it was a really rough ride. It took almost 10 hours to reach Coron incl a 30min break at open sea to fix some wooden parts on the side wings. The first six hours were tough with rough sea (sunny but windy) and half of the pasengers were vomiting. Things got calmer during the last four hours once there was some protection from the westly wind.
I think that safety in general felt "ok" but the sea sickness was a major concern. Also, it can easily become a very exhausting experience if there is a delay (like today).
Would I do it again? Yes. But I would try to plan around it if possible.
I have put some photos on my blog.
http://worldwidedomestic.blogspot.com/2014/12/boat-from-el-nido-to-coron.html
As for the questions on the boat schedule and other practicalities, I would recommend doing the research once arrived in El Nido - El Nido Art Cafe has all the information needed.
Finally, to state the obvious. The boat trip experience varies with weather. After arriving in Coron, I talked with another traveler who took the boat a day before me - 7 hours and no one being sea sick.
Edited: 10 years ago