I was looking for a red led head torch last year before going to skomer. I ended up with a lenserLED and used red electrical tape to cover the light on the recommendation of a warden. I was surprised it worked as well as it did, did fall off a cliff! The alpkit gamma does look like its worth trying for the price. The wife is coming with me this year to Skomer so will need a head torch too so I may try the alpkit gamma. How bright is the red light?I've had loads. The best I've had is the Alpkit Gamma. £15, has high/low plus red and green lights and optional red one on back of head for visibility.
Fantastic things.