Has anyone out there tried the dse701 also known as the graduate? I am wondering what kind of performance it has as far as battery life,; atty life, and vapor output. Been considering one rather than a 601 because of size. The cigar may be a better choice for me during movie nights if it lasts longer and vapor output is good. Also where do I get replacement batteries? Place I want to purchase from has the attys for it but doesn't list batteries. Can the carts be refilled. Would like to here from someone that has one or has tried one. Thanks