Has anyone seen this one , it finally looks like the kr808d-1 has a worthy competitor . I have been using a kr for a while , I also have a m401 , and a sidesho (don't know why i bought this one). But for me the ease of use a cartomizers offers, it can't be written off . And now with all the premium carts in different voltage . This has got to be the wave of the future . The premium carts I have been using for my kr will usually take 28 to 30 drops of e juice and when refilling ,I easily get another 20 . And I usually refill 4 times before boiling and 4 refills after so one cart lasts me about 8 refills total and then I toss it . The only drawback with the kr is unless you get an adapter you can't drip, with the 510 you have more options .Way to go Drew ..I cant wait to get my hands on one of these( I would love to do a comparison review) .It looks like the 510 in this configuration would be a better flavor producer than the kr808.