I've heard LRs drain batteries. I just received a new 650mah eGo from www.vapeBIG.com and am wondering if it will drain the battery significantly? Also, should I buy the mega cartomizers? And, what is the benefits of a "cone"? And lastly, who has the best prices/fastest shipping (in your opinion) on cartomizers such as these? Fast responses would be greatly appreciated, as I need to place an order ASAP!! Thanks!