I highly recommend The Artemas tank from mad vapes: Gun Metal Artemas Tube, Clear The one pictured is Gun Metal because they are currently out of Chrome. The cartos are from Crystal Clear vaping and are Smoktech 3.0 Ohm single coil double punched: https://crystalclearvaping.3dcartst...+XL+3.0ohm+Single+Coil&search.x=10&search.y=6 This tank is only $8.49 (I have two now in Chrome) They do not leak, are well constructed, easy to fill and very nice looking. The Smoktech 3.0 Ohm cartos are perfect for me and so far have lasted me a month before I had to toss my first ones out. I could have cleaned them, but at ten cents a day to use one it was not worth it. Since I use a 30 PG/ 70 VG mix in my juice, I slot the bottom punched hole in the carto with a Dremel Tool in order to insure more juice gets into the carto, but this really is not necessary. So far I have found that a carto tank has been the best tasting vape for me and one tank lasts about a day and one-half, and I vape a lot during the day and night.