Hi JR & welcome
Are you just beginning vaping? If you are then appreciate that what folks are trying to tell you that a 300+ watt mod is not normally a good choice for a beginner. They are big, they are heavy, they support extreme builds, and generally appeal to those looking for extreme vape clouds. If it is your first vape mod you are thinking of buying then there are an awful lot of good middle of the road ones that will most likely please you a lot more in the long run. I bought the GS320 and it failed and was returned shortly thereafter. I didn't replace it because I really had no need of such an extreme mod. I went with a 220 watt mod instead. Even that is more than enough because my favorite mods are the 60 to 80 watt single battery ones, of which I have about 20. If you want a great combo the Efuntop is selling Evic mini's for $15.99 and Theorem RDTA's for $9.99 (and every weekend I keep telling myself no more as I have enough of them to last a couple of lifetimes). I run anything up to 0.20 ohms on the Evics without a problem, and they fit in your pocket well.