First off, DON'T buy the light from dealextreme.com. I waited over a month and still didn't receive the light. I got my money back and ordered one at geomangear.com this Monday (The same week of xmas no less) and received the light on Wednesday. Highly recommand buying from this site. The first thing I did was compared the Magicshine to my Seca 900. My Seca destroyed it in both brightness and flood pattern, but for 6X the price it better. I then compared it to my Stella 180 (180 Lumuns) I bought for $130 a year or two ago. The Magicshine for only $90 (shipping included) destroyed my Stella. It isn't a 900 lumen light, but it is way brighter then any light you could buy for $90. The battery is small enough to fit in my Camelbak's IPod pocket and it wasn't too heavy on my helmet. I also has a nice big button so it's easy to push with gloves on. The quality was better then I expected too. In my option BUY THIS LIGHT. You will not find a better light for the price.