Yeah, if you need to blind people at 50' the 3D mag LED will do it. I upgraded to it from krypton and now it has almost too much power. I also use a Streamlite (G2?) day-to-day and am really happy with it; got the LED in it before they stopped selling it.
I'm using Trelock LS 730 bike front light. Fits nice in one of side pockets of my laptop backpack. I'm using it with four 3Ah AA rechargable batteries and all I can say I never regret buying it. The lamp has a decent throw and last at least 2-3 hours of 100% duty cycle between recharges (with new batteries). Using it for tasks from checking things under ceiling to debugging the wires in dark cabinets.
I work on lot of restaurant equipment, so a headlamp is my most important flashlight. I use the
Fenix HL21 LED headlamp, always carry a Fenix E11 single AA LED, and a Fenix E21 AA LED in my tool bag for attic/ceiling work.
Amazon.com carries everything!
I'm going to add another. I recently got a Q-Beam brand LED spotlight. Its bright as heck, long range focused beam, and cheap from Sam's. I used it under my house in the crawlspace. I could read a book from corner to corner with the light it throws. 10 hours on high, 20 hours on low, and SOS signal. Rechargable battery, AC and DC chargers included. It was like $20-$30.