I currently own a 2013 steel cyclocross bike that I use for daily commuting (approximately 1 hour per day). The model I have is equipped with a Shimano Sora groupset. I am considering moving to a steel road bike, and am looking at a used 2011 model with a Shimano Ultegra groupset.
Can anyone tell me whether there will be a noticeable difference moving from a Sora to an Ultegra groupset?