For a great user interface, check out a Sunwayman V10A. I have a review of the V10R in my signature line, it's very similar, just a different battery. With the V10A, you can use regular AA's, or if you want to later, start using lithium ion rechargeable batteries and get a big boost in output! Sunwayman's V series is great, because they use a rotating ring to adjust to any brightness you want between the max and the min!