Well tomorrow im buying my wife and i the 510 cause we have heard great things about it. Well i chew tobacco and my wife smokes so i need help in ordering the things we will need for it since its the first e-cig weve bought. We live in the u.s. so where should we order it from? Who has the fastest shipping? Best prices? What all will we need to order filled cartliges? Empty cartliges with liquid? Please help Thankyou very much.