This is kind of funny. When I got my "upgrade" bike, I went all out on a lot of the components, including an Easton carbon seatpost. Then, like a year later, I was looking at that seatpost online, and realized how much I paid for it. I remember thinking Was I on drugs!? But, I can ride over almost any pothole and my tush doesn't mind, so it was worth it.My commuter has a $10 alu seatpost which is just fine because the bike is steel. It wouldn't be good on my Alu bike, though. Even with carbon seat stays, there might be some teeth chipping on some of the roads I ride on. I guess the carbon seatpost was cheaper than a dentist visit! So, I guess if your riding aluminum, a carbon seatpost might be money well spent.
I've upgraded the brakes on my commuter bike from Sora to Ultegra. I've upgraded to Selle Anatomica saddles on both my bikes. I'd love to have better wheels on my commuter. My upgrades have been for comfort and performance, not aesthetic reasons (except my good bike's frame. That was lust!)![]()