One item where I can cut some weight is my rain jacket – I'm carrying a 12 oz Montbell rain jacket size large, even though it's been excellent. I'll still carry a 12 oz rain jacket in the colder months, but for milder weather a light duty jacket should be fine.
Of the lightweight (no more than 8-9 oz) rain jackets,
1) Which have the best coverage back and front? Some jackets cheat on weight by being very short in the torso.
2) Which are the most water resistant in sustained rain? Some of the jackets use more waterproof material.
3) Which have a good cut to allow light layering without being boxy and baggy?
Ones I've found:
Montbell Versalite
OR Helium II
Marmot Mica
Marmot Essence
Mountain Hardwear Superlight Plasmic
Because such a light jacket will sit in my pack most of the time, figure I can go without pit zips, though I think the Montbell Versalite has them along with the most waterproof material. Not sure about the length or cut.



