I thought sw45k was your favorite emitter. Is 519a 4500K so different? 3000K is nice because it's like incan, and easier on tired eyes in the pitch black than 4000K+, but I'll bet you coffee that you'd prefer a 2700K-3200K incan lamp to LED (because the color temperature profile of LED is so unnaturally narrow), except for the runtime. But there's enough, rarely does anyone need hours and hours or runtime, nor hundreds of lumens, and swapping batteries is fun, darnit. Get an incan E, run MN03 on Liion. You will not regret it, I promise you.