Just got my shipment of 1W 8mm Strawhat LED's from Ray. (http://www.aliexpress.com/product-fm/325252755-High-Power-1W-8mm-straw-hat-White-LED-120degree-viewing-angle-70-80lm-wholesalers.html) They're bright. If you are testing these things, even if you don't look into them, I recommend covering either them, your eyes, or both. They are spec'd at 350mA, and are running at approximately 3.08V. This comes out to 1.078W, a touch over their 1W rating, but not much. They are very sensitive to over-voltage, and will thermal runway almost instantly. They run decently warm, although I don't have a thermometer to test it accurately enough, I can estimate at the fact that I don't want to touch it for long at all. All in all, when regulated by a constant current, they are fairly steady, no changes in brightness, and a nice cool white. More posts to come as I keep them on!