I wonder how many who say there is no difference have actually owned both.
The 9100 Dura Ace and R8000 Ultegra look like kissing cousins. I do wonder what the specific differences are on those two grouppos, never ridden either.
DA is obviously much lighter and the finish is nicer to my eye. The finish and aesthetics means a lot to me.
I was all set to go 9200 DA but the rim brake version still has the junction box and there is probably little chance to get a group until Spring or Summer. Instead, I have ugly AXS Red.