I just got the Alpkit as they are rated by everyone I have met and they are only about 12-15£. So I can't comment on the battery life.
The alpkit uses Red and Green LEDs rather than filters which I am told makes a difference as it produces a more true red or green light. I took red and green light as being essential becuase they don't mess up your night vision (or at least only so little it is not noticeable), the alpkit also has a red tail-light so people can follow you in the dark.
The only thing I don't like about it is that when using the LEDs, rather than the big light, it goes to white (rather than red or green) first, so I have pass through the white (the one I don't want) to get to the other two. Having said that it may just be a case of getting double click mastered when switching it on.
The alpkit uses Red and Green LEDs rather than filters which I am told makes a difference as it produces a more true red or green light. I took red and green light as being essential becuase they don't mess up your night vision (or at least only so little it is not noticeable), the alpkit also has a red tail-light so people can follow you in the dark.
The only thing I don't like about it is that when using the LEDs, rather than the big light, it goes to white (rather than red or green) first, so I have pass through the white (the one I don't want) to get to the other two. Having said that it may just be a case of getting double click mastered when switching it on.