Bike Sizing Help

[Gobi]

Hi guys, Hoping you can assist with some valuable input.

I am keen on a Swift d-vore and the geometry is very different from the large giant xtc/athem that I have ridden in the past.

 

The reach of the medium looks right but I think I will be pushing the upper limits of the seat tube. I am just concerned that the reach of the large will make it uncomfortable. With the large however I could adjust the stem to between 50-70mm if I must.

 

I dont currently have the opportunity to try both.

 

Any input appreciated.

 

Thanks