Which helmet for track days?

[bhermans]

Hi all,

I plan to buy an helmet for some track days. What is the best choice because I am 1.87 cm? Hopefully, my esprit does have the glass sunroof and I spare so a few cm. But I am still with my head against the roof when it is closed. For sure I plan to keep the roof open when wearing the helmet. Do you know some thinner and as safe as other?
Thanks
Ben