In reply to pats87: Paclite is a fantastic material is very light, packs to nothing is very fragile. Saw someone tear a large hole in pacliite after with minimal force.
However if you are careful with it and happy to perform running repairs then it might be for you.
Personally I would go with proshell,I use the ME Kongar and find it a fantastic jacket (am on my second one), used it for weeks all over the alps in summer and all over the UK in winter for the last 3-4 years and love it.
I have never used the Spitz so could comment on that jacket.
Ben