I would be interested in any comments from anyone using any of the above lamp (or the IQ fly) as to the suitability of the lamps to a hilly rural (unlit) commute.
Thanks
Stutho
You're not going to be disappointed by any of those lights. The major differences are the housings where more money buys better quality and the beam patterns. The E3 has a conical beam* the others have a reflected shaped beam. In town and amongst other traffic I'd prefer the later out on my own along country lanes I'd prefer the former. If you've not seen it
here is a beam comparison which gives as idea, though you'll be disappointed if you expect any light to look as good to the eye as it does to the camera!
I've ridden with people who have the IQ Fly, but the only one I have experience of is the Supernova (I have two) Apart from the light itself, the service from Supernova is first rate. Any queries get answered promptly, by email, in English. The lights have a five year warranty, my original E3 recently developed a fault with the switch shorting out, couple of emails exchanged to explain the problem and they sent me a new light. This was before I'd returned the original and on a light that's nearly two years old and the replacement is effectively an upgrade. They also have an upgrade policy, where they'll upgrade the LED as new ones become available. I had my original one changed at the last leap forward in LEDs, cost was 40 Euro inc postage and it doubled the output. Supernova also do what IMO is the neatest rear light available, it's tiny, bright and looks indestructible.
The new B&M seems to have a great new feature, you can switch the standlight off, this may not seem a big deal, it will when you've been told a thousand times that you've left your lights on.
*There's a new version of the E3 with an asymmetrical beam, of which very little is known. I was hoping they'd lend me a lens to make a comparison, but apparently it uses a different LED and electronics so only the casing is the same.