Note to self... think twice before posting in the mechanics forum.

...although I knew full well that making a claim like "livelier acceleration" was like my butt dyno saying a cold air intake made my car faster. But sometimes you just feel it.

As far as weight, I actually do most of my riding on 20-23 lb vintage steel bikes. The extra 3-6 lbs over my carbon bike doesn't really hamper my speeds except when climbing. But drop a pound at the wheels and I can definitely notice.