I cannot believe my luck! I got my T5 the other day, I was all jazzed up and excited. Right out of the box, I started having switch problems. Took several attempts to light. Then I had an issue where it would go blank after lighting. I even saw it turn on dim then go to full brightness. Once, I left it on for 3-5 minutes, and it got so damn hot I could'nt even hold it. The switch has a short somewhere. It is already in a box back to Emissive Energy Corp in Rhode Island. Just a fluke, the 1 in 10000 lemon. This will not throw me off Inova. My T3, T2, T1, XO, X5, and X1 (old series, straight beam ) work flawlessly. Even Cadillac has a lemon come off the assembly line once in a while. Now, the possitive side is that when it did work properly, it threw a beam unlike I have ever seen. There is less side wall splatter than the T3. It is remarkably bright for its size. 4 watts at 100 lumens coming out of a 8.25 inch tube of black knurled machined 1/8" thick aluminum, someone give me a cigarette!!!! It is dissapointing to have this happen, now I will have to wait 2-4 weeks to get a new one!!!