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PlayboyJoeShmoe said:
The TEC 40 (mine with KPR103) puts out a BRIGHT, WHITE, flood of light. Down at my buddies place where there isn't much ambient light, my TEC 40 lit up a building at LEAST 200 feet from where I was. My buddy who uses an SL35X saw that and said WOW. He never says that.
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My TEC 40's are excellent lights, (I had one of the first with a faceted reflector) and with KPR103/XPR103 are wonderfully bright and impressive. I've done extensive runtime comparisons of small lights, especially the Tec 40 and the UK 4AA/Mini Q40/2L with alkalines and lithium (2L is lithium only). I did those tests quite a while ago but they're probably still in SEARCH somewhere.
I recently tested the XPR103/KPR103 options ( I agree the Krypton is less likely to blow prematurely) and was once again reminded of the "No Free Lunch" principle. In less than 45 minutes the initially outclassed beams of the three different UK's were brighter than the TEC 40 and remained burning longer and brighter.
Runtime is perhaps more important to me than to some other Flashaholics because I consider all my EDC lights as "what if" lights, which means small, light, bright, tough, waterproof, lithium batteries and the longest possible runtime.
Brightnorm