The Razor Helmet Mounting System is very easy to use and holds the light very securely so that it cannot be knocked or fall out which is a major issue with C clip style holders especially in true sidemount caves. The helmet mounting plate has a very low profile which is also great for super small areas. Last but not least the best feature of the new RHMS is the option to change the angle of the light head through 170 degrees so you can always point the light exactly where you want it and you no longer have any excuse for blinding you buddies.