Just for grins, I was wondering just how much of a difference there was between what I ride most of the time (2003 Lemond Poprad) and the newer (2020) Checkpoint...and by extension Domane. I see this over and over and over...It always surprises me how much folks waft and wane about how different various bikes are. I've rented a couple modern "wunderbikes" and I honestly can't feel much of any
gamechanging-level difference between them and my older bikes. There are differences to be sure, but relatively subtle.
As for the frame comparison below (56cm Checkpoint vs 55cm Poprad, 853 steel), difference in frame material and a bit more stack on the Checkpoint..otherwise not a whole lotta difference in basic geometry, after 20 years.