I’ve found certain manufacturers have internal helmet shapes that fit the shape of my head better than others. This has helped narrow down my helmet selection somewhat. (E.g. POC/Bell/Kask has my head touch specific points…a bit painfully.
Lazer/Specialized/Bontrager/Giro feels like it’s touching my head equally everywhere and more comfortable.
They both fit well (Specialized and Adwatt). The Adwatt is lighter and a bit more snug but feels good. They both have excellent strap and retention systems. (Way better than the POC)
I researched the Kask but it was super expensive, my head size would have made it necessary to get a large versus a medium and I wasn’t convinced I could get my head as low/tucked with it.
Testing just as fast without the visor was a big concern for me as well as I generally run without a visor to keep cooler. (Boiling in the last half of a 40km TT can cause quite a loss in power plus the visor fogging up etc.)
I’ll post better side on pictures over lunch with both helmets.