Prices vary from $100-$350.
What are you looking for? Just a main spot? Do you want colors or a walking light? Personally, I like Sunspot Lights. There are a lot of options, biggest thing is who will stand behind there product. Sunspot has a lifetime warranty. Feel free to call me if you have any questions.
I have a Coast HL8R on my hard hat for work with the battery pack on my belt, it has an extension for either on head band or belt usage. This, in my opinion, the best light. I can use it all day, nice and bright, has three levels of brightness and the beam is focusable. I like it so much that I bought one for home usage.
You will not be disappointed