I like the batteries in the back and a strap over the top. The batteries in the back help spread out weight, it's not as comfortable as a belt mounted pack but it's better than having all the weight up front. The strap over the top helps with stability and means the headband can be worn looser, and isn't as likely to cause headaches if you're wearing it for a long time. The MYO rotates down and for storage the housing locks out the switches when the light is rotated up.