Somehow I missed this review, Thanks HKJ!! Didnt' realize these KP's are LG cells.
Just got 2 pairs of the LG HE2 cells in yesterday from FT. They compare pretty much the same as the Efest 35A cells - exact or within 0.01A of each other in a light with the Nanjg FET based driver (direct drive). I was getting 5.69A on the LG's, and best I saw was 5.70A on an Efest 35A, Sam 20R, and Powerizer. In a Super Shocker, they did 6.08A - best I got on the Super Shocker was 6.20A with 2 Efest 35A's and one SONY VTC5. It's all so close, within any reasonable margin of variation of charging level, test setup, etc.
These are sooo close to Sam 20R's, with the 20R's dying quick after 30 secs, dunno, these cells seem to be a great alternative with a better discharge curve and longer runtime. Just use HKJ's comparator (http://lygte-info.dk/review/batteries2012/Common18650comparator.php), and compare the 20R to the KP IMR 2500 and look at the 5A discharge curve....
Bought mine here: https://www.fasttech.com/products/1659701. Really like'n these...