Join Date: May 2006
Location: Hillsboro, Oregon
Bikes: Specialized Roubaix Comp, Soma ES
I haven't been able to tell myself. I've switched seatposts on my cross bike from the main post which is carbon to an aluminum one in order to add a large seatpost bag for needing to carry more items and haven't felt any difference. The bike I do this on has 28's, is titanium and uses a Brooks Swift saddle so it very well may depend on quite a few factors if you'd notice it or not.
Demented internet tail wagging imbicile.