What are you going to be using the saddle for? I mean will you be touring on it or fast day rides? Those saddle you mentioned are more for touring; for faster riding their too wide for faster leg movement that a racing saddle provides such as the Brooks Swift which is a narrow racing leather saddle; also the B17 is more for an upright riding position whereas the Swift is more for a down low racing position. I have the B17 on my touring bike; I have the Swift on my racing bike (yeah I race in the over 65 catagory).