All of the integrated stem/handlebar cockpits would fit the Domane but why not get separate stem and handlebars?
Bontrager has good stuff; don't dismiss it as being Trek's house brand. Besides, you'll have it all covered with bartape and a cyclocomputer/Garmin/etc. anyways.
Which begs the question, why upgrade the handlebars at all? Wheel upgrades are so much sexier.
