Some pages back is a little discussion on these batteries between buzz, Matt, myself and perhaps a few others. The Orbs or these in the link below....compare the two. The green jacketed Panasonics are definitely less expensive though last I checked only came in the flat top which may influence your choice. I have like four of each...Orb and Panasonic and use both in a orion V3 with what seems like identical results....I go through between 5ml-6ml of juice on a single charge running the Orion at 15w.
https://www.illuminationsupply.com/...gh-discharge-flat-top-p-751.html#.UrXDYvRDv_k
https://www.illuminationsupply.com/...gh-discharge-flat-top-p-751.html#.UrXDYvRDv_k