Howdy. I'm currently running basic Shimano ST-2300 levers with Avid BB7 callipers.
A colleague has just brought in a 105 equipped bike (rim brakes) and the lever feel is night and day - simply feels much nicer and lighter to use.
So is the difference in the brake type or the levers, or both? If I were to upgrade the gears to 105 spec would there be a noticable difference in use and feel?