I've been looking into purchasing a vape pen under $100 but there are so many out there to choose from. Names like Pax 2, Grasshopper, Arizer Air, Wispr 2, Vapir 2.0, Vape xhale cloud Evo, SSV, iVapor, I have come across. I'm looking for one that has herb,wax for now, oil maybe later. So what do...