You should strongly consider your surgeons' preferences in auxiliary lighting equipment when buying headlamps. The influence of what they're used to and even what they first trained with can be strong, especially when it comes to a device with which they're working so closely. I tend to bring my own headlight with me when I perform surgeries in different facilities, simply because I'm used to its light quality, positioning ability and fit. It's details like those that'll make or break a surgeon's day and prove the value of your purchase.