i like my 2012 giant defy which has tiagra and sora mixed components . the 2014 defy 0 has Ultegra group set . would i notice any difference between the 2 bikes with the defy 0 having a much better group set . i live in Cornwall and am looking for a few more gears to get up and down the hills around here . defy 2 has 18 gears ,defy 0 22 gears . thanks in advance