I really like my Dinotte 5w - it's LED and uses AA batteries - so it's easy to just carry batteries and change them out. I really like not having the big water bottle battery and the versatility, the light is tiny and just straps onto your handlebars (or in my case my dir hanger). I also like the price, at ~$150, it's a relatively cheap light that you can see by.
They also have a new and improved, but expensive, light, so maybe the 5w will drop in price some.