ThruNite lamps are generally processed very well, very high quality ... I already have a few different TN lamps and am quite satisfied. Operation is via the rotary ring optimally ... drawback ev. With pollution? The light output is of course superior ... mix of coverage and Nahfeldausleuchtung- actually optimal. The light color is very pleasant, not as cold white ... I noticed at the stainless steel ring on the reflector that this too sharp-edged made the transition to the lamp house ... ev. insufficient deburring, is chamfered? The lamp will be delivered WITHOUT case ... why? Therefore, the price difference ...? The lamp is comparable to the Fenix TK 75, however, the Fenix is more designed to reach! Aggregate: A TOP lamp!