Well, clearly, everyone here views the bike as a canvas and you customize it to notch it up and turn it into a work of art. I'm really pretty cheap and my Madone is not, by any means, top of the line but it is the nicest bike I've ever owned and I love it. But that said, I've pretty much stuck with the original equipment. But that seat...I'd sell it in a minute if I felt comfortable that I was leaping towards improvement.
Does the Thompson seat post mostly add reduced weight or does it improve ride?
2011 Trek Madone 4.5 WSD
2011 Trek FX7.2--What can I say? It was on sale!