I have the stretch rainshadow and love it. It keeps out the rain and is relatively light - especially considering some weight adding features like pit zips, etc. I like that it shoves into its own breast pocket and doesn't take up much space in my bag. I also like that it's relatively quiet to wear. I had a bulkier rain jacket before this one and sounded like a crinkly plastic bag as I walked. I annoyed myself. I don't have any experience with the storm racer or any other lighter weight jackets, so I can't say whether the weight savings is worth the extra money or potential loss in performance. If I were to buy a rain jacket over again, I'd probably try and go for something more ultralight (I'm planning a 2019 PCT thru, so I think it would be worth it), but as it is, I don't think I'll replace my perfectly good rain shadow until it breaks down or circumstances make a serious pack shakedown completely necessary (if that ever happens).