Hi Lighthead!
While not an expert at headlamps, I have some suggestions.
1. So that others can help you better, give specifics as to what you need the headlamp for. Racing a bike would have different needs than say rock climbing, or scuba diving or hiking.
As this has been posted several times, a light is like a tool, and there are different tools for different jobs.
2. Use the search function to read what has already been written on this form. One of my first posts here, was "how do I make my mag-light brighter?", and I posted that without researching the topic here first, later to find out that topic had been discussed at length.
That's the neat thing about a forum like this, is that the history is not lost.
3. What are your weight and run time requirements?