請各位大大建議車架大小(已爬文很難抉擇)

各位大大

小弟我身高166~170 CM之間(每次量都不一定)
想買捷安特的車子,依照捷安特官方資料應該是選擇S號的車架

然後小弟也去過捷安特南京店,南港忠孝東路上的捷安特,以及三重捷安特經銷商問
所有的老闆都建議小弟買S號(都沒騎過,但有跨上過S車架,但是沒跨過XS車架,沒辦法比較差異)

但是根據小弟爬文結果,板上都建議買小號一點的車架,
所以小弟目前很難決定,
想請問一下板上是否有身高和小弟差不多的人,有買過捷安特公路車可以給點意見

此外小弟在 Fit Calculator 網站上做的數據附在下面供參考
Measurements
-------------------------------------------
Inseam: 77
Trunk: 61
Forearm: 32
Arm: 63
Thigh: 53
Lower Leg: 55
Sternal Notch: 138
Total Body Height: 166.5


The Competitive Fit (cm)
-------------------------------------------
Seat tube range c-c: 49.9 - 50.4
Seat tube range c-t: 51.4 - 51.9
Top tube length: 55.1 - 55.5
Stem Length: 10.2 - 10.8
BB-Saddle Position: 78.2 - 80.2
Saddle-Handlebar: 49.6 - 50.2
Saddle Setback: 0.3 - 0.7
Seatpost Type: NON-SETBACK


The Eddy Fit (cm)
-------------------------------------------
Seat tube range c-c: 51.1 - 51.6
Seat tube range c-t: 52.6 - 53.1
Top tube length: 55.1 - 55.5
Stem Length: 9.1 - 9.7
BB-Saddle Position: 77.4 - 79.4
Saddle-Handlebar: 50.4 - 51.0
Saddle Setback: 1.5 - 1.9
Seatpost Type: NON-SETBACK


The French Fit (cm)
-------------------------------------------
Seat tube range c-c: 52.8 - 53.3
Seat tube range c-t: 54.3 - 54.8
Top tube length: 56.3 - 56.7
Stem Length: 9.3 - 9.9
BB-Saddle Position: 75.7 - 77.7
Saddle-Handlebar: 52.1 - 52.7
Saddle Setback: 1.0 - 1.4
Seatpost Type: SETBACK


還請板上各位高手給點意見

謝謝