This bike was my upgrade from a 2008 Orbea Onix- and although it is also was a 105 complete, this bike blows it away. It is a stiffer, smoother ride, and gives me more bang for my buck with pedal pushing. I switched out the cassette for an 11 28, and as far as I am concerned, I am ready for any hill or speed trial. I had my local bike shop put it together, because I wanted to make sure it was just right. The first bike I ordered was the wrong size, and Competetive Cyclist was great about sending me out a better size and helping me to return the first one. Great experience and great machine!