I have the Lighthound rebrand, and found it to be quite good, especially with the 2aa extension. Very bright for 2aa - I found it slightly annoying it only comes on in High, but I think it's ideal for gifts, friends, family, colleagues etc.
Quite intrigued by the Balder BD4 - with 2 x 18650 and an output of 800 lumen - anyone know if it's any good, how does it hold up to a Thrunite Catapult or a Sunwayman T40C??