Hi guys. I am planning on ordering a bunch of CR123 batteries from Batterystation. First, I assume the batteries I need for an ARC LS are CR123A. Am I correct? Batterystation sells both Sanyo and DP in CR123A. The DP is less expensive than the Sanyo. What are the differences between these two batteries? Which do you reccomend for an ARC LS? Thanks guys, I appreciate your expertise.