I found the Arione comfortable when in an aero position with pelvis rolled but far less so when more upright if taking it easy or climbing. Antares feels comfortable in every position. Think I have reasonably wide sit bones though which will be a factor. I have larger mates who generally have a less aero position who love the Arione though (they wouldn't let me touch their sit bones for comparison though).
I found the Arione comfortable when in an aero position with pelvis rolled but far less so when more upright if taking it easy or climbing. Antares feels comfortable in every position. Think I have reasonably wide sit bones though which will be a factor. I have larger mates who generally have a less aero position who love the Arione though (they wouldn't let me touch their sit bones for comparison though).