In reply to mattc:
I've been really impressed with the little piko, I was going to get the Wilma but my main use is at work and the Wilma is a bit too bulky.
As it is the Piko is more than enough for night riding off road. I might opt for a larger one if dh riding regularly.
The wire connections have been problem free and the battery (3.3ah) life excellent. I like that it came with the extension cord to put the battery in my bag/jacket.
Easily switch between light levels (new version has a Bluetooth switch option) and easy enough to change how many light levels.
The elastic head band is getting a bit tired but I've had it over 6years so a new one might be in order.
Their support is excellent also.
You could easily get carried away buying more torch than you need on their website but the Piko has been all I've needed.