I tried the L&M Vis 360+ at REI after buying my Urban 500 there. They have a great display board and give you plenty of time to play with the toys.

It's not any brighter than my very inexpensive Vivo Bike Illuminati helmet light (prices range from $10-$20 on Amazon, depending on the vendor and product name). But the Vis 360+ projects a much more even beam. The inexpensive helmet lights are great to-be-seen lights, but the beams are oddly shaped and uneven. They tried to emulate the focused beam shape of the Busch & Muller lights, using an LED that aims upward into a forward facing mirror, but the low priced lights use a scallop shaped mirror that casts an odd pattern. Again, a great to-be-seen helmet light and somewhat useful for lighting up where I look in really dark areas, but you get what you pay for with the L&M Vis 360+.