I've been trying to wait for these lights to come out so I could check out the reviews before putting down 200+ to get one but we've been doing a lot of camping lately and I have seen a real need for a bright white LED with a red low level option. We recently spent two weeks tent camping the Appalachian trail down to the Smokeys and then another week in northern PA for trout season and I have used my U2 almost exclusively because it does almost everything. The only problem is that 2 am leak break when you need to stumble out of the tent to relieve yourself. Even at the lowest setting the U2 completely destroys your night vision which makes that task really disorienting. I have an A2 with red LEDs but in the middle of the night picking the right light gets complicated. I'm really hoping that the K2 will be the combination light that will let me set up our tent after dark while also letting me take a nocturnal trip without being blinded. I also am praying it will take a rechargeable. Lets hope SF gets them out soon because I am planning trips for most of the summer.