I would love to tap into your collective wisdom for a moment to help me choose the nearest 'correct' bike size.
I had a bike fit a couple of years ago and am due another one but before I do, I am looking to purchase a new bike, namely 3T Strada Pro.
The geometry is as follows (from https://www.3t.bike/en/products/bikes/strada-551.html#/269-bikes_size-xs...)
Size XS S M L XL
Fork axle-crown 355 355 355 355 355
Headtube angle 69.5 71.2 73 73.5 73.5
Seattube angle 72.5 72.5 72.5 72.5 72.5
Toptube length 507 529 550 571 592
Seattube length 487 500 506 518 533
Headtube length 119 119 143 172 202
BB drop 71 71 71 71 71
Stack 501 507 536 565 594
Reach 349 369 381 393 405
Front center 567 567 573 589 609
Rear center 405 405 405 405 405
Fork rake 50 43 43 43 43
My measurements were based around a 'sportive' fit so happier to go a bit racier.
Height: 188 cm
Target Knee Angle: 150° to 152°
W 50mm - handlebar drop - vertical distance from underside of the noise to the hood trough
X 820mm - vertical saddle height - from BB to underside of nose of the saddle
Y 200mm - pedal to saddle setback - horizontal distance between pedal axle (175mm cranks) pointing forward to tip of saddle
Z 660mm - horizontal reach - horizontal distance from tip of saddle to hood trough
Now I've drawn diagrams, done my best maths but can't fathom whether a L or XL is best. Needless to say this is made more complicated by the fact I can't try either size before I order one in. I can return for a different size but that would be at my expense, which I'd rather avoid having already agreed to hand over a kidney and my testicles to my wife to be given permission to buy a nice bike.
Any help is greatly appreciated.