I bought an essentially new Ultegra 6600 set for 40 dollars off craigslist. The guy had a Mikkelsen and Tarmac SL2 in his garage where he just upgraded to full 6700. I would trust myself over Mikes Bike any day. It's easy enough to know if a brake is going to work or not, just squeeze the darn thing. The problem with the Tektro is that the brake pads suck majorly. I do prefer the modulation of the Ultegra, though, very well built