There hasn't been a lot of change. Helmets will always vary quite a bit in performance person-to-person, but the Aerohead is generally the most solid bet (most likely to be fast, if not fastest....so a good choice if you can't test).

For road helmets the Evade (2) is also consistently at or near the top and vents reasonably well. The Balista just slightly less so. The only real newcomer is the Vanquish. It seems to test well, but venting doesn't seem to be as good for some as the Evade. For the Vanquish testing, it's important to know if it was done with the visor. Roadies typically don't use the visor, but triathletes wanting a more breathable aero helmet than the Aerohead often will. I tend to think of the Vanquish as slightly faster than the Evade2 with the visor on and slightly slower without (again, YMMV).

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ECMGN Therapy Silicon Valley:
Depression, Neurocognitive problems, Dementias (Testing and Evaluation), Trauma and PTSD, Traumatic Brain Injury (TBI)