What are you folks using for sleeping bags for places where you might get a lot of cool and rainy conditions? Synthetic/down? 'Temperature rating?' - the published numbers don't seem to mean much. For spring/fall on S. Vancouver Island, I've been using a MEC Raven duck down bag that's rated at zero C (or a bit below?) and it feels about right, so I'm probably a bit of a 'cold sleeper'. I've been thinking that a synthetic bag like the MEC Centaurus (rated EN Comfort -2C, EN limit -9C) might be a good bet if I want to move to a synthetic bag. https://www.mec.ca/en/product/5041-035/Centaurus--9C-Sleeping-Bag I have an unused Wiggys (bag/overbag) system that I bought when I thought some winter camping was planned but never used it. So, it is being sold (I hope) and there's a spot on the shelf for a synthetic replacement. Thoughts? Thanks!