I’ve just bought a carbon Defy and I’m really pleased with it. I was riding a carbon TCR and find the Defy just as quick, but with the added bonus of disc brakes and Di2, not to mention out of the box comfort. Availability was an issue for a medium (I went for the Pro 0), but I hit lucky in the end, after many phone calls and emails. I swapped the wheels out for Giant’s P-SLR0s which I sourced from Germany. They’re now set up tubeless with Schwalbe the One tyres. The Defy is a great bike which is fast, comfortable and well specced for the money, especially as I somehow got a decent discount! So, maybe check out a Defy, as well.