Yes till I went to race tires I used the Direzza Z1s, they lasted me two seasons I think. I bought a second set I leave on my track car all the time, I still run them on the track is its wet or cold in the morning.
My rides a 2002 SVT track car, & Boosted 2007 ST with the SAP.
The helmet has a special meaning for many drivers. How important is it to you? - It protects my head.
Do you have any special rituals when the helmet is concerned like many have? - I wipe it so that I can see better.