so far for the saddle i'm looking at the brooks b17, but i am also looking at the sprung versions such as the champion flyer. are spring saddles generally good for fixed bikes? i generally use my bike for commute, but go up and down the manhattan bike path on the west side once or twice a week, so i need a saddle good for both travels.

i was just thinking about getting any carbon fiber seatpost.

any suggestions/criticisms would be helpful. thanks.