Got this thing in last week and I'm pretty impressed with it for the price. I got the Vector one from VaporBeast. Been running Smoktech tanks on it with dual and single coil cartos. All of them are 2ohm, they also have three holes punched in them. I was worried they might flood or leak but they are doing perfect. They seem to do well up to 5v and then no change, as expected. I don't have an inline meter to put on them but I've got another mod with VV and built in meter and it seems to keep up with it until it hits the 2.5amp wall. The amp limit isn't really a big deal if you are aware of it and order your hardware accordingly. I can't make up my mind on which I prefer between the dual and sinlge coils cartos. Mainly because I haven't tried the same juice in both. I've got Halo juices running in the tanks with duallys and AVE and CopperCreek in the single coils tanks. As soon as my big bottle of Boba's gets here I'll compare them side by side and see if theres much difference. Might order a few 2.5 or 3 ohm cartos too just to check them out. Thanks to everybody for posting all the info on these, I hadn't even heard of them until last week. Didn't take long to find this section once I knew of them though.