Cento10NDR
I built a 2020 Cento10NDR last year when parts were still semi-available. I was coming from a 2010 Argon 18 Krypton.
I can’t say enough good things about it. I’ve never been this comfortable on a road bike. I wanted an endurance frame that didn’t look so “endurancy”, but also incorporated aero features. The taller head tube prevents me from having to use a ton of spacers and the sloping top tube allows me to show at least a little seat post.
The actiflex rear insert helps to prevent getting beaten up, and doesn’t make the frame feel like it suffers from a lack of responsiveness.
The Stemma/ Barra cockpit hide all Di2 wiring and look great, but are freaking expensive at approximately $800 for the stem/handlebar combo.
I think framesets are harder to come by right now.