I ride a 2018 Domane SL 5 and have nothing but good things to say about it. With 32mm tires it can take some gravel and bad roads. That said, I just bought a 2022 Chedkpoint SL5, not because of any problem with the Domane but because I'm 74 and wanted a new bike to add to the stable. Either way you'll love either of the two. I would think that the Checkpoint would offer more stability. You have to look around the country to find a shop that has either bike in stock. The Trek site will help you do this. I visited my son in Houston two weeks ago and both bikes were available. I live in Montana and neither are available here with the exception of the Checkpoint AL. I'm sure that there are other endurance and gravel bike options available from other companies.