If you're looking to lighten your load, it's worth talking to professionals at a local shop like Mountain Chalet, and even REI, for tips on where to cut back. I'm sure the folks at REI will be helpful. I KNOW the crew at Mountain Chalet will ask all the right questions to see about getting you some good gear. (I shop at both, btw.)
If you want to do some comparison surfing, here are some sites to check out:
Do you have a piece of lightweight gear you think the rest of us should consider? Let us know.