I had a NAU, fitted pretty well, I liked it, it'd taken a few knocks and I couldn't find a NAU stockist in Australia with my size (medium)
I tried on an Airoh, loved the look but it didn't seem to fit my head shape.
Ended up with a MOTS Carbon, I love it, nice and light, my only issue was fitting my bluetooth headset, it fitted in the NAU easier.