Been vaping for about 6 months now. Started simple with a TWIST and clearomizers. Since then I have used mechs, tube mods, RBAs, RDAs, tank systems, etc. Here's my question. Has anyone ever just gone back to the simple eGos and, say, a Protank from all of the expensive, mechanical, rebuildable stuff? There's no telling how much money I have in my current stuff.