Montane Minimus all the way. No frills, keeps you warm and dry and, being a smock, you can get it on with frozen wet hands.
I had the Kameleika jacket, great bit of kit but it takes a heck of a long time to dry out, something that you may find an issue if camping. The Minimus I just shake the drops off and it's ready to go. Minimus packs to half the size too. On the downside it has no hood adjustment but when I really really need to wear it it's not an issue.