Ya dynamo, I’ve got an Exposure front hub which is a rebranded Shutter Precision PD-8 with a B&M Cyo IQ Premium T front light and Schmidt rear seat post light.
There’s a shit ton to choose from depending on budget but I wouldn’t go for less brightness than the Cyo IQ, as I said it’s not mega bright.
The Cyo IQ has daylight running lights and a stand light, it senses ambient light and either switches between full power on the main LED or 4 little ones underneath which are better for just being seen. When you come to a half it switches off the main LED and leaves 2 of the small LEDs on so you still have a front light. Rear light has a stand light too. Rear light was pricey ‘cos I’m a tart but they’re normally really cheap but keep in mind they’re pretty much all designed to comply with German traffic regulations and thus they’re all just on – no flashing. Zee Germans are very serious about regulation 😛
German shops are the cheapest, got mine from Bike24.
Look here for moar words and pics,
http://www.peterwhitecycles.com/b&m-hl.asp