Speed Needle - best saddle ever (for my butt) - was also thinking that (almost) no padding on a saddle is not rideable - until I tried - now I have them on 2 bikes and even after riding one of the bikes for 8 hours - 3 days in a row - I had any kind of problem with the butt - dont ask me about my legs
back to topic: Serotta is top notch and I am always curious where you found all those tyres which are not just black or skinwall. I also have a soft spot for those tyres - Wildgripper in green and Corratecs Diamant Grip in yellow are my favorite.