I find them comfier but I’m not riding pro tour hours. Anyway, here is a small, not very scientific real world test that showed swapping to some aero bars was faster but with the caveat that due to the overall shape, the bar swap also changed the riders position.
The average lap time with the Enve bars is 6s down on the control at 2m 27s – a 3.9% saving. This surprises us, as we hadn’t expected the small difference in bar shape to have such an effect on aero drag, but the improvement in speed wasn’t all down to the bars’ aerodynamic cross section.
They are narrow along the tops and flare out at the drops, so while the overall width is the same, the tops present a smaller frontal area. Plus the shape of the drops encourages the rider to adopt a narrower, more aerodynamic position.