I just purchased the Apsire Atlantis with the sub-ohm battery. However I do like the sub-ohm battery, I was looking at getting a box mod. I like the size of the eleaf istick that I use for my nautilus mini. I was looking into getting the Sigeli 100W Plus but since I'm not a dripper I wasn't sure if I should spend the money or need that many watts. I don't want anything too big. What is the best mod for the Atlantis that is on the smaller side?