It's pretty crazy how the rim brake version is $500 more than the disc, but most sizes are out of stock now. The Ultegra Vitesse Disc is only $80 more than the regular E'Tape. I'm actually tempted to get the Vitesse. I'm 50 years old and want to make sure I have this exact frame under me for the rest of my life, I don't want anything else and at some point it will be discontinued. Hopefully the one I have lasts forever.