I like the Matrix not just for the fancy LED lights but also how it feels on my head! The programmable LED is very helpful when I cycles with my kids - the scrolling 'Cycling with Kids' at the back of my helmet helps to give cyclists what to expect when they overtake me. The L-R indicators also keeps me safe on the roads especially at intersections.
Lastly - seldom mentioned - is how it fits with those wearing glasses. There are other helmets with straps that bite into the spectacle frames but the Matrix doesn't have that issue.
Only CON - for future consideration - is the position of the ON-OFF button. With spectacles on - it takes a bit of manoeuvring of the fingers between the strap, specs frame - to reach the button. Of course I can take it off before pressing the button - but do consider changing to position of the switch!