In reply to kevin stephens:
I got the Exposure Strada for doing the Dunwich Dynamo this year, I wanted something that had a decent beam on it. It's brilliant for dark country lanes - you also get a remote switch which you can mount up by your hoods/drops so you can 'dip' the beam with just a thumb flick - it's great, you get the benefits of a really strong beam, but you don't dazzle oncoming traffic. Conserves battery too. On full beam, traffic sees your beam long before they see you, I found I am actually much more visible than during the day. Battery - a full night ride, so 6-7 hours mostly on a medium power setting (which is still a seriously powerful beam) ran it down to about 60% of capacity, so the 15 hours they reckon on this setting seems realistic. It reckons 3 hours on full power, but honestly I'm not sure I can imagine needing this much light on the road. Price wise - define too expensive. I got a deal on Wiggle as I was buying in mid summer, it definitely isn't cheap but then I think you do get what you pay for - I want to keep up my long rides through the autumn/winter and this light gives me plenty of confidence to do that, so personally I think it is a reasonable investment. Not sure what it would be like on MTB trails however, I think Exposure make other lights more designed for that.
edit - just seen that they have just released the Mk6, so you may still be able to get a deal on a Mk5 if you shop aroundm eg:
http://www.rutlandcycling.com/103331/products/exposure-strada-mk-5-2015-fro...
I got an Exposure Trace rear light to go with it, significantly more wallet friendly price but still bright enough to light up your surroundings. That being said, while I think these are great for being seen, (and caveat - I haven't used the front one) I suspect I would probably want something higher power as a primary light for going fast down unlit roads. It's very light, compact, well machined, USB chargeable, and holds a good charge (it reckons 3/6 hours on high power steady/pulse, 6/12 on medium, and 12/24 hours on low power, which would be what I would use for commuting. From limited use those numbers seem pretty accurate, charged it once when I got it and not had to recharge it yet! I am probably going to get a front one of these as an everyday commuting light for urban/suburban rides when the Strada is overkill.
Post edited at 08:44